[Federal Register Volume 91, Number 56 (Tuesday, March 24, 2026)]
[Rules and Regulations]
[Pages 14350-14405]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2026-05676]



[[Page 14349]]

Vol. 91

Tuesday,

No. 56

March 24, 2026

Part IV





Department of Health and Human Services





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Office of the Secretary





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45 CFR Parts 160 and 162





Administrative Simplification; Adoption of Standards for Health Care 
Claims Attachments Transactions and Electronic Signatures; Final Rules

Federal Register / Vol. 91 , No. 56 / Tuesday, March 24, 2026 / Rules 
and Regulations

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DEPARTMENT OF HEALTH AND HUMAN SERVICES

Office of the Secretary

45 CFR Parts 160 and 162

[CMS-0053-F]
RIN 0938-AT38


Administrative Simplification; Adoption of Standards for Health 
Care Claims Attachments Transactions and Electronic Signatures

AGENCY: Office of the Secretary, Department of Health and Human 
Services (HHS).

ACTION: Final rule.

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SUMMARY: This final rule implements requirements of the Administrative 
Simplification subtitle of the Health Insurance Portability and 
Accountability Act of 1996 (HIPAA), and the Patient Protection and 
Affordable Care Act, as amended by the Health Care and Education 
Reconciliation Act of 2010, enacted on March 30, 2010--collectively, 
the Affordable Care Act. Specifically, this final rule adopts standards 
for health care claims attachments transactions, which will support 
health care claims transactions, and a standard for electronic 
signatures to be used in conjunction with health care claims 
attachments transactions.

DATES: 
    Effective Date: This final rule is effective on May 26, 2026. The 
incorporation by reference of certain material listed in this rule is 
approved by the Director of the Federal Register as of May 26, 2026.
    Compliance Date: Compliance with these regulations is required by 
May 26, 2028.

FOR FURTHER INFORMATION CONTACT: 
    Geanelle G. Herring, (410) 786-4466.
    Shaheen Halim, (410) 786-0641.
    Shelley Harrow, (410) 786-6875--Regulatory Impact Analysis.
    Christopher Wilson, (410) 786-3178.

SUPPLEMENTARY INFORMATION:

I. Executive Summary

A. Purpose/Need for the Regulatory Action

    Despite the health care industry's widespread use of electronic 
health records (EHR) and broad implementation of the Health Insurance 
Portability and Accountability Act of 1996 (HIPAA) transaction 
standards, the exchange of health care claims attachments has remained 
largely manual, frequently relying on fax, mail, or portal uploads. 
This final rule adopts standards for the electronic exchange of 
clinical and administrative documentation to support claims-related 
processes. Standardizing health care claims attachment transactions is 
intended to reduce administrative burden and improve data exchange 
efficiency between health plans and health care providers.

B. Summary of the Provisions

    This final rule implements requirements of the Administrative 
Simplification subtitle of HIPAA and the Affordable Care Act. 
Specifically, this final rule adopts definitions of ``attachment 
information'' and ``electronic signature'' in 45 CFR 162.103 and 
``health care claims attachments transaction'' in Sec.  162.2001. This 
rule also adopts standards for health care claims attachments 
transactions in Sec.  162.2002(a) through (d) and standards for 
electronic signatures, to be used in conjunction with health care 
claims attachments transactions, in Sec.  162.2002(e).
    In this final rule, we are adopting the following X12N standards 
and Health Level 7 (HL7[supreg]) implementation guides (IG) for use by 
covered entities in health care claims attachments transactions:
     X12N 277--Health Care Claim Request for Additional 
Information [006020X313].
     X12N 275--Additional Information to Support a Health Care 
Claim or Encounter [006020X314].
     HL7 IG for Clinical Document Architecture (CDA) Release 2: 
Consolidated CDA (C-CDA) Templates for Clinical Notes (US Realm) Draft 
Standard for Trial Use Release 2.1, Volume One--Introductory Material, 
June 2019 with Errata (HL7 C-CDA IG Volume One).
     HL7 IG for CDA Release 2: C-CDA Templates for Clinical 
Notes (US Realm) Draft Standard for Trial Use Release 2.1, Volume Two--
Templates and Supporting Material, June 2019 with Errata (HL7 C-CDA IG 
Volume Two).
     HL7 CDA Release 2 Attachment IG: Exchange of C-CDA Based 
Documents, Release 2, March 2022 (HL7 Attachments IG).\1\
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    \1\ The proposed rule that preceded this final rule named an 
earlier iteration of this HL7 Attachments IG (Release 1, March 
2017). The iteration of the HL7 Attachments IG named in this final 
rule (Release 2, March 2022) contains cumulative technical updates 
that are defined as ``maintenance.'' Additional discussion regarding 
this can be found in section III.E. of this final rule.
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     HL7 IG for CDA Release 2: Digital Signatures and 
Delegation of Rights, Release 1 (Digital Signatures Guide).

C. Summary of the Differences Between the Notice of Proposed Rulemaking 
and Final Rule

    The proposed rule included proposals to support both health care 
claims and prior authorization transactions, as well as a standard for 
electronic signatures to be used in conjunction with these 
transactions. Commenters expressed broad support for the HHS proposal 
to adopt health care claims attachment standards. Conversely, 
commenters overwhelmingly expressed two concerns about the proposals 
for prior authorization attachments standards: (1) potential 
misalignment when paired with the currently mandated X12N 278 
transaction standard for prior authorization; and (2) potential 
misalignment between HHS's proposed attachment standard for prior 
authorization transactions with the requirements in CMS's then-
proposed, but now finalized, rule titled: ``CMS Medicare and Medicaid 
Programs; Patient Protection and Affordable Care Act; Advancing 
Interoperability and Improving Prior Authorization Processes for 
Medicare Advantage Organizations, Medicaid Managed Care Plans, State 
Medicaid Agencies, Children's Health Insurance Program (CHIP) Agencies 
and CHIP Managed Care Entities, Issuers of Qualified Health Plans on 
the Federally-Facilitated Exchanges, Merit-Based Incentive Payment 
System (MIPS) Eligible Clinicians, and Eligible Hospitals and Critical 
Access Hospitals in the Medicare Promoting Interoperability Program 
final rule'' (hereinafter referred to as the CMS Interoperability and 
Prior Authorization final rule) (89 FR 8758). Upon considering these 
comments, along with further analysis and consultations with standard 
setting organizations (SSO), we have elected not to finalize health 
care attachments standards supporting prior authorization transactions 
at this time.
    In the proposed rule, we proposed the adoption of the 2017 
iteration of one of the IGs (the HL7 CDA Release 2 Attachment IG: 
Exchange of C-CDA Based Documents, Release 1, March 2017) (HL7 
Attachments IG) (87 FR 78438). Based on the comments received, we 
examined the history of changes to the HL7 Attachments IG and 
determined that the cumulative changes in the March 2022 iteration 
constitute ``maintenance updates'' because they refine the IG's 
existing content rather than adding new content. Further consultation 
with the designated standards maintenance organization (DSMO) indicates 
that the maintenance updates reflected in the March 2022

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iteration of the HL7 Attachments IG better facilitate the 
implementation of Version 6020 of the X12N 275 and X12N 277 standards 
for claims attachment, which the Secretary of Health and Human Services 
(the Secretary) is adopting in this final rule. Therefore, this final 
rule adopts the March 2022 iteration of the HL7 Attachments IG rather 
than the proposed March 2017 iteration.

D. Summary of Costs and Savings

    Based on the estimates included in the Regulatory Impact Analysis 
(RIA), the primary net annualized cost, discounted at 7 percent, to the 
industries is approximately $303.75 million. This estimate includes the 
difference between the primary net annualized costs of $478.23 million, 
which includes the regulatory review costs of $14.13 million, and 
primary net annualized savings of $781.98 million.

II. Background

    This background discussion presents a history of statutory 
provisions and regulations relevant to this final rule.

A. Legislative Authority for Administrative Simplification

1. Standards Adoption and Modification Under the HIPAA Administrative 
Simplification Provisions
    Congress addressed the need for a consistent framework for 
electronic transactions and other administrative simplification issues 
in HIPAA (Pub. L. 104-191, enacted on August 21, 1996). Through 
subtitle F of title II of HIPAA, Congress added to title XI of the 
Social Security Act (the Act) a new Part C, titled: ``Administrative 
Simplification,'' which required the Secretary to adopt standards for 
certain transactions to enable health information to be exchanged more 
efficiently and to achieve greater uniformity in the transmission of 
health information. For purposes of this and later discussion in this 
final rule, we sometimes refer to this statute as the ``original'' 
HIPAA provisions.
    Section 1172(a) of the Act provides that any standard adopted by 
the Secretary under the HIPAA Administrative Simplification provision 
shall apply, in whole or in part, to the following persons, referred to 
as ``covered entities'': (1) a health plan; (2) a health care 
clearinghouse; and (3) a health care provider who transmits any health 
information in electronic form in connection with a HIPAA transaction. 
In general, section 1172 of the Act provides that any standard adopted 
under HIPAA is to be developed, adopted, or modified by an SSO. The 
statute requires consultation with four organizations named at section 
1172(c)(3)(B) of the Act. In adopting a standard, section 1172(f) of 
the Act requires the Secretary to rely upon recommendations of the 
National Committee on Vital and Health Statistics (NCVHS) and consult 
with appropriate federal and state agencies and private organizations.
    Section 1172(b) of the Act provides that a standard adopted under 
HIPAA must be consistent with the objective of reducing the 
administrative costs of providing and paying for health care. The 
transaction standards adopted under HIPAA enable financial and 
administrative electronic data interchange (EDI) using a common 
structure, as opposed to the many varied, often proprietary, 
transaction formats on which the industry had previously relied. This 
lack of uniformity across transaction formats engendered an 
administrative burden.
    Section 1173(g)(1) of the Act, which was added by section 1104(b) 
of the Affordable Care Act, further addresses the goal of uniformity by 
requiring the Secretary to adopt a single set of operating rules for 
each transaction. These operating rules are required to be consensus-
based and reflective of the necessary business rules and operations 
affecting both health plans and health care providers.
    Section 1173(a) of the Act provides that the Secretary must adopt 
standards for financial and administrative transactions, and data 
elements for those transactions, to enable health information to be 
exchanged electronically. The original HIPAA provisions require the 
Secretary to adopt standards for the following transactions: (1) health 
claims or equivalent encounter information; (2) health claims 
attachments; (3) enrollment and disenrollment in a health plan; (4) 
eligibility for a health plan; (5) health care payment and remittance 
advice; (6) health plan premium payments; (7) first report of injury; 
(8) health claim status; and (9) referral certification and 
authorization (prior authorization). Section 1104(b)(2)(A) of the 
Affordable Care Act added the requirement for the Secretary to adopt a 
standard for electronic funds transfers. Additionally, section 
1173(a)(1)(B) of the Act requires the Secretary to adopt standards for 
any other financial and administrative transactions the Secretary 
determines appropriate.
    Sections 1173(c) through (f) of the Act provide that the Secretary 
must adopt standards that: (1) select or establish code sets for 
appropriate data elements for each listed health care transaction; (2) 
address and ensure security for health care information; (3) specify 
procedures for electronic signatures in coordination with the Secretary 
of Commerce, compliance with which will be deemed to satisfy both state 
and federal statutory requirements for written signatures for the 
listed transactions; and (4) address the transmission of appropriate 
standard data elements needed for the coordination of benefits, 
sequential processing of claims, and other data elements for 
individuals who have more than one health plan. Section 1174 of the Act 
requires the Secretary to review the adopted standards and adopt 
modifications to them, including additions to the standards as 
appropriate, but not more frequently than once every 12 months.
    Section 1175 of the Act prohibits health plans from refusing to 
conduct a transaction as a standard transaction.\2\ It also prohibits 
health plans from delaying a transaction or adversely affecting, or 
attempting to adversely affect, a person or the transaction itself on 
the grounds that the transaction is in a standard format. Additionally, 
it establishes a timetable for covered entities to comply with any 
standard, implementation specification, or modification as follows: (1) 
for an initial standard or implementation specification, no later than 
24 months following its adoption; and (2) for modifications, as the 
Secretary determines appropriate, but no earlier than 180 days after 
the modification is adopted.
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    \2\ See 45 CFR 162.103 for the definition of standard 
transaction.
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    Sections 1176 and 1177 of the Act establish civil money penalties 
(CMP) and criminal penalties to which covered entities may be subject, 
for violations of HIPAA Administrative Simplification provisions. The 
Department of Health and Human Services (HHS) administers the CMPs 
under section 1176 of the Act, while the U.S. Department of Justice 
administers the criminal penalties under section 1177 of the Act. 
Section 1176(b) of the Act sets out limitations on the Secretary's 
authority and provides the Secretary certain discretion with respect to 
imposing CMPs. For example, section 1176(b)(1) provides that no CMPs 
may be imposed with respect to an act if a penalty has been imposed 
under section 1177 of the Act with respect to such an act. Section 
1176(b)(2)(A) generally precludes the Secretary from imposing a CMP for 
a violation corrected during the 30-day

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period beginning when an individual knew or, by exercising reasonable 
diligence, would have known that the failure to comply occurred. The 
original HIPAA provisions are discussed in greater detail in the August 
17, 2000 Health Insurance Reform: Standards for Electronic Transactions 
final rule (65 FR 50312) (hereinafter referred to as the Transactions 
and Code Sets final rule), and the December 28, 2000 Standards for 
Privacy of Individually Identifiable Health Information final rule (65 
FR 82462). We refer readers to those documents for further information.
2. Affordable Care Act Amendments to HIPAA Administrative 
Simplification
    Section 1104(c)(3) of the Affordable Care Act reiterated the 
original HIPAA requirement to adopt a health claims attachment 
standard, and directed the Secretary to promulgate a final rule to 
establish a transaction standard and a single set of associated 
operating rules.\3\ Section 1104(c)(3) of the Affordable Care Act 
requires that the adopted standard be ``consistent with the X12 Version 
5010 transaction standards,'' provides that the Secretary must adopt 
the standard and operating rules by January 1, 2014, to be effective no 
later than January 1, 2016, and that the Secretary may adopt the 
standard and operating rules on an interim final basis. We interpret 
the 24 month ``effective date'' under section 1104(c)(3) of the 
Affordable Care Act to mean that the compliance date for covered 
entities should be 24 months after the effective date of this final 
rule. Unlike the original HIPAA provisions, the Affordable Care Act 
provision makes no allowance for an extended period for small health 
plans to achieve compliance.
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    \3\ As we noted in the Administrative Simplification: Adoption 
of Standards for Health Care Attachments Transactions and Electronic 
Signatures, and Modification to Referral Certification and 
Authorization Transaction Standard proposed, at that time CAQH CORE 
had developed operating rules for attachments but the NCVHS had yet 
to evaluate them and make a recommendation to the Secretary, thus 
they were not proposed for adoption (87 FR 78445).
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B. Prior Rulemaking

    In the Transactions and Code Sets final rule (65 FR 50312), we 
implemented some of the HIPAA Administrative Simplification 
requirements by adopting standards for electronic transactions 
developed by SSOs, and medical code sets to be used in those 
transactions. We adopted X12 Version 4010 standards for administrative 
transactions, and the National Council for Prescription Drug Programs 
(NCPDP) Telecommunication Version 5.1 standard for retail pharmacy 
transactions, which were specified at 45 CFR part 162, subparts K 
through R.
    Since then, we have adopted several modifications to the HIPAA 
standards, including in the Health Insurance Reform: Modifications to 
the Health Insurance Portability and Accountability Act (HIPAA) 
Electronic Transaction Standards final rule (hereinafter referred to as 
the Modifications final rule) which appeared in the January 16, 2009 
Federal Register (74 FR 3296). That rule, among other things, adopted 
updated versions of the standards, X12 Version 5010, and the NCPDP 
Telecommunication Standard Version D.0 and equivalent Batch Standard, 
Version 1, Release 2. We also adopted the NCPDP Batch Standard Version 
3.0 for the Medicaid pharmacy subrogation transaction. Covered entities 
were required to comply with Version 5010, Version D.0, and Version 3.0 
standards on January 1, 2012, though with respect to the latter, small 
health plans were required to comply on January 1, 2013.
    In the HIPAA Administrative Simplification: Standards for 
Electronic Health Care Claims Attachments proposed rule (hereinafter 
referred to as the Standards for Electronic Health Care Claims 
Attachments proposed rule), which appeared in the September 23, 2005 
Federal Register (70 FR 55990), we proposed to adopt certain health 
care claims attachments standards. As opposed to a standard with 
generalized applicability, that proposed rulemaking proposed to adopt 
health care claims attachment standards with respect to specific 
services, including ambulance services, clinical reports, emergency 
department, laboratory results, medications, and rehabilitation 
services. However, public comments we received on those proposals 
persuasively argued that the standards lacked technical maturity and 
that interested parties were not ready to implement the electronic 
exchange of clinical data, so we did not finalize adopting them.
    HHS issued a proposed rule titled: Administrative Simplification: 
Adoption of Standards for Health Care Attachments Transactions and 
Electronic Signatures, and Modification to Referral Certification and 
Authorization Transaction Standard that appeared in the December 21, 
2022 Federal Register (87 FR 78438) (hereinafter referred to as the 
HIPAA Standards for Health Care Attachments proposed rule). In that 
proposed rule, we proposed new requirements for HIPAA covered entities 
that we believed would improve the electronic exchange of health 
information and a new electronic signature standard. We provided a 90-
day public comment period.
    We later issued a correcting document titled: Administrative 
Simplification: Adoption of Standards for Health Care Attachments 
Transactions and Electronic Signatures, and Modification to Referral 
Certification and Authorization Transaction Standard; Correction, which 
appeared in the March 17, 2023 Federal Register (88 FR 16392) 
(hereinafter referred to as the HIPAA Standards for Health Care 
Attachments proposed rule correction notice). That notice corrected 
typographical and technical errors in the HIPAA Standards for Health 
Care Attachments proposed rule by conforming the proposed regulations 
text to the proposed policies discussed in the preamble.
    Subsequently, we extended the public comment period for the 
proposed rule by another 30 days via a notice that appeared in the 
March 24, 2023 Federal Register titled: ``Adoption of Standards for 
Health Care Attachments Transactions and Electronic Signatures, and 
Modification to Referral Certification and Authorization Transaction 
Standard: Extension of Comment Period'' (88 FR 17780). We believed it 
was important for the public to have the opportunity to review and 
comment on the corrected proposed rule because most of the corrections 
to the proposed rule were in the regulation text.
    In the HIPAA Standards for Health Care Attachments proposed rule 
(87 FR 78445), we proposed to adopt attachments standards that would 
apply to health care claims or equivalent encounter transactions and to 
referral certification and authorization (prior authorization) 
transactions.\4\ In this final rule, HHS adopts standards only for 
health care claims attachments transactions or equivalent encounter 
transactions, which will support health care claims transactions. HHS 
further adopts a standard for electronic signatures to be used in 
conjunction with health care claims attachments transactions. We thus 
refer to the attachment standards being adopted in this final rule as 
``health care claims attachment standards.'' In section III.A.

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of this final rule, we explain why we elected not to move forward with 
the proposals to adopt an attachments standard for prior authorization 
transactions.
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    \4\ We clarify that, in this final rule, we frequently use the 
shorthand ``health care claims'' to speak of health care claims or 
equivalent encounter information transactions under 45 CFR 161.1101. 
We note that attachments would most likely be requested for health 
care claims (Sec.  161.1101(a)) involving payment, rather than for 
``equivalent encounter information'' transactions (Sec.  
161.1101(b)) involving the ``transmission of encounter information 
for the purpose of reporting health care.''
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C. Standards and Code Sets Organizations

    The HIPAA Standards for Health Care Attachments proposed rule 
presented information about the organizations responsible for 
developing and maintaining the transaction standards and code sets that 
we are adopting in this final rule. Information about each 
organization's balloting process--the process by which they vet and 
approve the products they develop and changes thereto--is available on 
their respective websites. We provide links to these websites in this 
section.
    As we stated previously, the law requires any standard adopted 
under HIPAA to be developed, adopted, or modified by an SSO. Section 
1171 of the Act provides that an SSO is an organization accredited by 
the American National Standards Institute (ANSI) that develops 
standards for information transactions, data elements, or any standard 
that is necessary to, or will facilitate the implementation of, 
administrative simplification. Pursuant to section 1172(c)(3) of the 
Act, a HIPAA SSO must develop, adopt, and modify standards in 
consultation with certain organizations: the National Uniform Billing 
Committee (NUBC), National Uniform Claim Committee (NUCC), Workgroup 
for Electronic Data Interchange (WEDI), and American Dental Association 
(ADA). The two SSOs associated with this final rule are the Accredited 
Standards Committees (ASC) X12 and HL7, both of which maintain websites 
where the required IGs may be obtained. One other organization, the 
Regenstrief Institute (Regenstrief), a health research institution and 
not an SSO, maintains a code set named Logical Observation Identifiers 
Names and Codes (LOINC), which is important to this rulemaking.
1. X12 \5\
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    \5\ X12. (n.d.). Retrieved from https://X12.org/.
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    The first SSO associated with this final rule is X12, which 
develops and maintains standards for the electronic exchange of 
business-to-business transactions. An ANSI-accredited organization, X12 
membership is open to all individuals and organizations. An X12 
subcommittee known as Subcommittee N: Insurance (X12N) develops and 
maintains electronic standards specific to the insurance industry, 
including, but not limited to, health insurance. Comprised of 
volunteers, X12N develops standards for electronic health care 
transactions for common administrative activities including: (1) 
claims; (2) remittance advice; (3) claims status; (4) enrollment; (5) 
eligibility; (6) authorizations and referrals; and (7) electronic 
health care claims attachments. X12N is responsible for obtaining 
consensus on the standards from the entire organization and producing 
draft documents that it makes available for public review and comment, 
which it addresses as necessary before voting on any proposal. 
Proposals must then be reviewed and ratified by a majority of the X12N 
voting members and X12's executive committee.
2. HL7 \6\
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    \6\ Health Level Seven International. (n.d.). Retrieved from 
https://www.HL7.org/.
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    The second SSO associated with this final rule is HL7, an ANSI-
accredited SSO that develops and maintains standards for the exchange, 
integration, sharing, and retrieval of electronic health information 
that supports clinical practice and the management, delivery, and 
evaluation of health services. Its domain is principally clinical data, 
and its specific emphasis is the interoperability between health care 
information systems. HL7's membership is open to all individuals and 
organizations, and it focuses its interface requirements on the entire 
health care industry, not just a subset of it.
    HL7 conducts a multi-step process called balloting to solicit 
feedback and comments on standards and specifications prior to 
publication.\7\ A technical committee, such as a workgroup, develops 
the standard or specifications, which is then submitted for 
consideration under the balloting process. All HL7 members are eligible 
to vote and submit feedback on standards, regardless of whether they 
are members of the committee that developed the standard. Non-members 
may also vote on a given ballot for a standard, though to do so they 
must pay an administrative fee. After reviewing feedback received 
during voting, HL7 technical committees vote on ``recommendations,'' 
which require a two-thirds majority for approval. HL7 standards are 
available to the public on its website, and the website also describes 
in more detail HL7's balloting process.\8\ HL7 standards are free and 
open source, and documentation is available to anyone to ensure that 
all implementers can equally access information.
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    \7\ Health Level Seven International. (n.d.). HL7 Balloting. 
Retrieved from https://confluence.hl7.org/display/HL7/HL7+Balloting.
    \8\ Health Level Seven International. (n.d.). Retrieved from 
https://www.hl7.org/.
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3. The Regenstrief Institute (Regenstrief) \9\
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    \9\ Logical Observation Identifiers Names and Codes from 
Regenstrief. (n.d.). Retrieved from https://loinc.org/.
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    Regenstrief is a health research institution that develops and 
maintains a code set, LOINC, which is the code system, terminology, and 
vocabulary for identifying individual clinical results and other 
clinical information. Regenstrief supports the development of a code 
system for attachments use cases and works closely with the HL7 Payer/
Provider Information Exchange (PIE) Work Group (formerly known as the 
Attachments Work Group) to develop a set of LOINC codes to uniquely 
indicate the type and content of attachment information in electronic 
transmissions. Regenstrief maintains LOINC through its LOINC Committee, 
which is composed of volunteer representatives from academia, industry, 
and government who serve as subject matter experts in their domains of 
expertise. That committee establishes overall naming conventions and 
policies for the development process.

D. Industry Standards, Code Sets, and IGs

1. Electronic Data Interchange (EDI) and Transaction Standards
    In the HIPAA Standards for Health Care Attachments proposed rule, 
we discussed how HIPAA transactions involve the electronic transmission 
of information between two parties to carry out health care-related 
financial or administrative activities (87 FR 78441). These activities 
include health insurance claims submissions and prior authorization 
requests, and HIPAA standards for those transactions require uniformity 
for EDI of those transmissions.
    The benefit of HIPAA standards is that they use a common 
interchange structure, eliminating covered entities' need to have 
information technology (IT) systems that accommodate multiple 
proprietary, and potentially continually changing, data formats. The 
interchange structure uniformity enables covered entities to exchange 
medical, billing, and other information to process transactions more 
expeditiously and cost-effectively, reduces handling and processing 
time, and eliminates the risk of lost paper documents, thereby reducing 
administrative burdens,

[[Page 14354]]

lowering operating costs, and improving overall data quality.
    HIPAA transaction standards specify: (1) data interchange 
structures (message transmission formats); and (2) data content (all of 
the data elements and code sets inherent to a transaction and not 
related to the format of the transaction). Implementation 
specifications detail the nature, location, and content format of each 
piece of information transmitted in a transaction. Standardization of 
transactions also involves: (1) specification of the data elements that 
are exchanged; (2) uniform definitions of those specific data elements 
in each type of electronic transaction; (3) identification of the 
specific codes or values that are valid for each data element; and (4) 
specification of the business actions each party must take to ensure 
the exchange of administrative transactions occurs smoothly and 
reliably, regardless of the technology employed.
a. IGs--X12
    As discussed in section II.C.1. of this final rule, X12 develops 
and maintains standards for the electronic exchange of business-to-
business transactions. X12N publishes transmission standards that apply 
to many lines of insurance business. For example, the X12N 820 message 
format for premium payment may be used for automobile and casualty 
insurance. X12 implementation specifications, referred to by the 
industry as IGs and written collaboratively by X12N workgroups, make 
these general standards functional for industry-specific uses. The 
specifications are based on X12 standards, but contain detailed 
instructions for using the standard to meet a specific business need. 
X12's implementation specifications for HIPAA transaction standards 
adopted by the Secretary are known as ``Technical Reports Type 3'' 
(TR3). Each X12N IG has a unique version identification number 
represented in a parenthetical, where the highest version number 
represents the most recent version. HHS adopted the then-updated 
Version 5010 of the X12 standards in the Modifications final rule (74 
FR 3296), while this final rule adopts Version 6020 of the X12N 275 and 
X12N 277 standards, the rationale for which we discuss in section III. 
of this final rule.
b. IGs--HL7
    HL7's PIE Workgroup develops standards for electronic health care 
attachments. The workgroup, which includes industry experts 
representing health care providers, health plans, and health technology 
vendors, is also responsible for creating and maintaining the IGs. The 
IGs are sets of instructions and associated code tables that describe, 
list, or itemize the content, format, and code to be sent, and specify 
how such information is to be conveyed in an electronic health care 
attachment.
    The HL7 CDA is an XML-based (a computer programming language) 
markup standard that specifies the encoding, structure, and semantics 
of clinical documents for purposes of transmitting attachment 
information. XML-coded files have the same characteristics and 
information as hard copy documents, so regardless of how data are sent 
within a transaction, they can be read and processed by both people and 
machines. An important feature of the CDA standard is that it allows 
the entire body of an electronic document to be replaced by an image, 
for example, a scanned copy of a page or pages from a medical record. 
That permits the clinical content to be conveyed by an image or text 
document, but a header still supports automated document management. 
The CDA header contains standardized, machine-readable data elements, 
such as document type, patient and provider identifiers, and service 
dates that enable health information technology (health IT) systems to 
automatically route, index, associate, and manage attachment documents 
even when the document body consists of images or other non-structured 
content. This feature of the CDA standard is relevant because it 
accommodates health care attachments that may not be conducive to XML 
formatting, such as medical imaging, video, or audio files.
    HL7 also produces the C-CDA standard that provides specifications 
for formatting document templates, depending on whether they are 
structured or unstructured, enabling the CDA to create numerous 
specific document types, known as templates. The HL7 C-CDA IG document 
templates are designed to be electronic versions of the most common 
types of paper document attachment information. Attachment information 
not included in a template may be created by using instructions 
included in the finalized unstructured document IG; supported 
unstructured formats include MSWORD, PDF, Plain Text, RTF Text, HTML 
Text, GIF Image, TIF Image, JPEG Image, and PNG Image.
2. Code Sets
    Transaction data content standardization involves identifying the 
specific codes or values for each data element. Health care EDI 
requires many types of code sets, including large medical data code 
sets and classification systems for medical diagnoses, procedures, and 
drugs, and smaller code sets to identify categories, such as facility 
type, currency, units, or a state within the United States. Large data 
code sets include those developed and maintained by federal agencies, 
such as the Centers for Medicare & Medicaid Services' (CMS) Healthcare 
Common Procedure Coding System (HCPCS), and by private organizations, 
such as the American Medical Association's (AMA) Current Procedural 
Terminology (CPT[supreg]) and the ADA's Code on Dental Procedures and 
Nomenclature (CDT Code).10 11 These code sets have been 
adopted through rulemaking under HIPAA in the Transactions and Code 
Sets final rule (65 FR 50312) and are mandated for use in federal and 
state health care programs, such as Medicare, Medicaid, and the 
Children's Health Insurance Program (CHIP). SSOs require or permit 
their use in their standards.
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    \10\ CPT[supreg] is a registered service mark of the American 
Medical Association.
    \11\ The CDT code set is a proprietary code set.
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3. IGs as HIPAA Standards
    Section 1172(d) of the Act directs the Secretary to establish 
specifications for implementing each of the adopted standards. As we 
explained previously, SSOs have developed IGs by which to implement the 
same standards for different business purposes. In the HIPAA Standards 
for Health Care Attachments proposed rule, we proposed an approach we 
have taken with previous HIPAA Rules that adopted a specific IG as both 
the ``standard'' and the ``implementation specifications'' for each 
health care transaction (87 FR 78442).
    In pursuing this approach, we were mindful that section 1104(c)(3) 
of the Affordable Care Act requires that the Secretary promulgate a 
final rule to establish a transaction standard and a single set of 
operating rules for health care attachments that is ``consistent with 
the X12 Version 5010 transaction standards.'' We interpreted this 
requirement to mean that the proposed health care attachment 
implementation specifications must be compatible with X12 standards 
generally, meaning any standard we adopt for attachment information can 
be electronically transmitted by an X12 transmission standard in the 
same transaction (87 FR 78442). The Affordable Care Act was enacted in 
2010, at which time we had adopted Version 5010 of the X12 standards. A 
decade later, we

[[Page 14355]]

interpreted the Affordable Care Act's mandate as referencing the then-
current standards--the X12 Version 5010--but not specifically requiring 
adherence in perpetuity to a static standard, which would contravene 
the HIPAA standards paradigm that is premised on standards evolution 
over time and be contrary to logic as X12 continues to publish newer 
versions of its standards. Therefore, in the HIPAA Standards for Health 
Care Attachments proposed rule, we proposed to adopt Version 6020 of 
certain X12 standards (87 FR 78447).
    Additionally, we proposed to adopt transaction standards that can 
be used together in a single electronic transmission (87 FR 78447 
through 78449). HL7 standards can work in conjunction with other 
standards like X12. The HIPAA covered entities who would use the health 
care claims attachment standard are currently using X12 transaction 
standards, so adoption of a health care claims attachment standard 
using X12 standards, which are being finalized in this final rule, 
should have minimal impact on covered entities.
    Separately, we are also aware that SSOs are developing and piloting 
other types of standards. In the HIPAA Standards for Health Care 
Attachments proposed rule, we solicited public comment on this and any 
alternative implementation specifications that may be considered 
compatible with X12 Version 5010 (87 FR 78442). Commenters were 
supportive of our proposals pertaining to claims attachments, however, 
commenters expressed concerns about the proposals to include prior 
authorization within the attachment transaction. Commenters identified 
additional standards for consideration, specifically the HL7 Fast 
Healthcare Interoperability Resources (FHIR[supreg]) standard.\12\ We 
summarize the alternatives that commenters recommended we consider, and 
provide our full response to these comments, in section III.D.2. of 
this final rule.
---------------------------------------------------------------------------

    \12\ Health Level Seven International. (2023). Guide to Using 
HL7 Trademarks. Retrieved from http://www.hl7.org/legal/trademarks.cfm?ref=nav. HL7 requires the registered trademark with 
the first use of its name in a document, for which policies are 
available on its website at www.HL7.org.
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E. The NCVHS Recommendations to the Secretary

    In the proposed rule, we stated that the NCVHS is a statutorily 
designated advisory committee that provides the Secretary with 
recommendations on health information policy and standards (87 FR 
78447).\13\ Among the ways it does so is by convening regular forums 
with industry groups on key issues related to population health, 
standards, privacy and confidentiality, and data access and use. 
Pursuant to HIPAA, the NCVHS advises the Secretary on the adoption of 
standards, implementation specifications, code sets, identifiers, and 
operating rules for HIPAA transactions. For readers' reference, we 
include here the process discussion also found in the HIPAA Standards 
for Health Care Attachments proposed rule.
---------------------------------------------------------------------------

    \13\ At the time this final rule was being drafted, the NCVHS 
website was undergoing maintenance. National Committee on Vital and 
Health Statistics. (n.d.). Retrieved from https://ncvhs.hhs.gov/. 
Website references herein to NCVHS recommendation and artifacts 
reflect access made prior to the initiation of maintenance mode and 
also appeared in the proposed rule. Current inquiries seeking NCVHS 
recommendation letters and other artifacts referenced herein should 
be directed to: [email protected].
---------------------------------------------------------------------------

    The NCVHS held a number of hearings and made several sets of 
recommendations to the Secretary on claims attachment standards, which 
are reflected in the administrative record and described in prior 
Federal Register notices. For example, the HIPAA Standards for Health 
Care Attachments proposed rule discusses the NCVHS subcommittee 
hearings, correspondence to the Secretary, and its March 30, 2022 
recommendation urging prompt adoption of a claims attachments standard 
(87 FR 78443 and 78444).
    The NCVHS Standards Subcommittee held a November 17, 2011 hearing 
on health claims attachments to gather information regarding new 
business needs, priorities, issues, and challenges. Participant 
testimony addressed the development status of standards and 
implementation specifications. Some organizations testified regarding 
their interest in serving as attachments operating rules authoring 
entities. In a letter to HHS dated March 2, 2012, the NCVHS 
Subcommittee on Standards advised HHS that it was premature to make 
formal recommendations regarding the adoption of any standard, 
implementation specification, or operating rule associated with health 
care attachments.\14\ On May 5, 2012, the NCVHS recommended that the 
Council for Affordable Quality Healthcare (CAQH), a nonprofit entity 
whose stated mission is to improve the efficiency, accuracy, and 
effectiveness of industry-driven business transactions, be designated 
as the operating rules authoring entity.\15\
---------------------------------------------------------------------------

    \14\ National Committee on Vital and Health Statistics. (2012, 
March 2). Claim Attachments. Retrieved from https://ncvhs.hhs.gov/wp-content/uploads/2014/05/120302lt1.pdf.
    \15\ National Committee on Vital and Health Statistics. (2021, 
May 5). Recommendations to Designate an Authoring Entity and Ensure 
Industry Collaboration for the Development of Operating Rules for 
Health Care Administrative Transactions. Retrieved from https://ncvhs.hhs.gov/wp-content/uploads/2014/05/120505lt.pdf.
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    The NCVHS Subcommittee held a second hearing on health claims 
attachments on February 27, 2013, where it identified a trend toward 
convergence of administrative and clinical information. In a June 21, 
2013 letter, the NCVHS recommended that the Secretary adopt a number of 
initial attachments-related transaction standards by January 1, 2016 
(the date by which the Affordable Care Act required claims attachment 
standards to be effective), but advised HHS to take a comprehensive and 
incremental approach to considering attachment standards to promote 
innovation and flexibility.\16\ The NCVHS noted there was industry 
consensus that adoption of standards should not be limited to ``claim 
attachments,'' but, rather, should be more inclusive of any kind of 
attachment with administrative or clinical information. It recommended 
that attachments-related transaction standards should be applied to 
claims, eligibility, prior authorization, referrals, care management, 
post-payment audits, and any other administrative processes for which 
supplemental information is needed. Among other recommendations, the 
NCVHS advised HHS that attachment standards should support structured 
and unstructured data, and both solicited and unsolicited 
transmissions. It further advised that attachments standards should be 
defined for two types of transactions: (1) Query (the electronic 
solicitation of an attachment); and (2) Response (the electronic 
transmission of an attachment). The NCVHS held another hearing on 
health care attachments on February 15, 2016, and on July 5, 2016 sent 
the Secretary a letter titled: ``Recommendations for the Electronic 
Health Care Attachment Standard.'' \17\ This letter consolidated its 
previous recommendations on attachments and advised that updated 
versions of the available standards were ready for industry use, and 
there was unanimous testimony that the health care industry was eager 
to see them adopted. The NCVHS recommended that HHS complete additional 
rulemaking to adopt the recommended standards

[[Page 14356]]

considering the length of time that had elapsed since the 2005 
publication of the previous, and, ultimately, premature Standards for 
Electronic Health Care Claims Attachments proposed rule (70 FR 55990), 
and subsequent technology advancement and stakeholder readiness.
---------------------------------------------------------------------------

    \16\ National Committee on Vital and Health Statistics. (2013, 
June 21). Attachments Standards for Health Care. Retrieved from 
https://ncvhs.hhs.gov/wp-content/uploads/2014/05/130621lt2.pdf.
    \17\ National Committee on Vital and Health Statistics. (2016, 
July 5). Recommendations for the Electronic Health Care Attachment 
Standard. Retrieved from https://ncvhs.hhs.gov/wp-content/uploads/2018/03/2016-Ltr-Attachments-July-1-Final-Chair-CLEAN-for-Submission-Publication.pdf.
---------------------------------------------------------------------------

    On March 30, 2022, the NCVHS sent the Secretary a letter titled: 
``Recommendations to Modernize Aspects of HIPAA and Other HIT [(Health 
Information Technology)] Standards to Improve Patient Care and Achieve 
Burden Reduction.'' \18\ This letter continued to stress previous 
recommendations urging the Secretary to adopt a standard for electronic 
attachments as soon as possible, and also stated--
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    \18\ National Committee on Vital and Health Statistics. (2022, 
March 30). Recommendations to Modernize Aspects of HIPAA and Other 
HIT Standards to Improve Patient Care and Achieve Burden Reduction. 
Retrieved from https://ncvhs.hhs.gov/wp-content/uploads/2022/04/Recommendation-Letter-HIT-Standards-Modernization-to-Improve-Patient-Care-March-30-2022.pdf.

    We recognize that there is ongoing debate and no definitive 
industry consensus about the role of attachments (i.e., documents) 
as opposed to data (i.e., a string of data elements not structured 
within a document). While the vision with APIs [(Application 
Programming Interfaces)] based on FHIR seem to be driving toward 
more of a data-driven transaction, we see more than sufficient 
industry demand for a document-based attachment standard, and we do 
not foresee any imminent demise of the utility of digital documents. 
We suggest short-term publication of an attachment rule, with 
consideration for emerging standards based on recent input from 
industry and other advisory group discussions. This could add 
immediate value for industry and could support future actions as 
HIPAA's procedural requirements may be updated to allow for non-
document type digital attachment data.\19\
---------------------------------------------------------------------------

    \19\ National Committee on Vital and Health Statistics. (2022, 
March 30). Recommendations to Modernize Aspects of HIPAA and Other 
HIT Standards to Improve Patient Care and Achieve Burden Reduction. 
Retrieved from https://ncvhs.hhs.gov/wp-content/uploads/2022/04/Recommendation-Letter-HIT-Standards-Modernization-to-Improve-Patient-Care-March-30-2022.pdf.

    Based on the NCVHS's previous recommendations to the Secretary, and 
particularly in consideration of its most recent March 30, 2022 
recommendation, we are finalizing adoption of a document-based 
attachments standard for healthcare claims or equivalent encounter 
transactions in this final rule.

F. Other Industry Recommendations

1. Consensus-Based Organization Support
    Industry consensus-based organizations, which vet proposals before 
they are presented to the NCVHS, agree that the standards we proposed 
are sufficiently mature to support health care business needs. Both 
WEDI and the CAQH Committee on Operating Rules for Information Exchange 
(CORE) have described the benefits that adopting health care 
attachments standards would bring in automating and streamlining 
workflows that, today, are primarily manual processes and sources of 
significant administrative burden. We discussed their perspectives in 
the HIPAA Standards for Health Care Attachments proposed rule (87 FR 
78443).
    In May 2019, CAQH CORE issued a document titled: ``Report on 
Attachments: A Bridge to a Fully Automated Future to Share Medical 
Documentation,'' where it reported evidence from its 2018 environmental 
scan indicating a high degree of industry readiness and interest in the 
attachments standard.\20\ The report noted that ``the health care 
industry continues to wait for an electronic attachments standard that 
can simplify the exchange of necessary medical information and 
supplemental documentation.'' Specifically, the report stated that 
``health plans, providers and vendors lack the direction needed to 
support broad use of automation in the attachment workflow, or for 
industry to coalesce around the use of even a small number of 
electronic solutions,'' leading to largely manual, and often paper-
based, processes, and ultimately underscoring the need to standardize 
electronic attachment exchange methods.
---------------------------------------------------------------------------

    \20\ The Council for Affordable Quality Healthcare Committee on 
Operating Rules for Information Exchange. (2019). CAQH CORE Report 
on Attachments: A Bridge to a Fully Automated Future to Share 
Medical Documentation. Retrieved from https://www.caqh.org/hubfs/43908627/drupal/core/core-attachments-environmental-scan-report.pdf.
---------------------------------------------------------------------------

2. Other Recent Public Comment Support
    CMS published the Reducing Administrative Burden to Put Patients 
Over Paperwork request for information (RFI), which appeared in the 
Federal Register on June 11, 2019 (84 FR 27070). That RFI solicited 
public comment on ideas for regulatory, subregulatory, policy, 
practice, and procedural changes to reduce unnecessary administrative 
burdens for clinicians, providers, patients, and their families, with 
an aim to improve quality of care, lower costs, improve program 
integrity, and make the health care system more effective, simple, and 
accessible. To be clear, the RFI did not relate to, and was not for the 
purpose of, soliciting comments on HHS's efforts pertaining to HIPAA 
Administrative Simplification. Nevertheless, many commenters, including 
organizations representing physician provider groups, insurance payers, 
health technology vendors, health care financial managers, and health 
IT standard advisory bodies, called for the publication of a HIPAA 
electronic attachments proposed rule to be accelerated, as well as 
guidance on other standards, such as electronic signature protocols to 
achieve these goals. These commenters indicated that adoption of a 
HIPAA attachments standard could help reduce administrative burden in 
many clinical and administrative situations where documents need to be 
shared, and relieve providers of current burdensome, largely paper-
based, processes.
    In preparation for its August 25, 2020 Standards Committee Meeting, 
the NCVHS invited the public to provide feedback on the CAQH CORE 
operating rules for prior authorization transactions. In response, 
commenters expressed their support for the adoption of an attachment 
standard. Commenters also provided input on current standards 
development efforts underway to address prior authorization challenges, 
including recommendations for the Secretary to explore or allow the use 
of other standards or alternative approaches.\21\ In that regard, we 
acknowledge there is a growing base of evidence that may support our 
adopting attachment standards that rely on emerging technologies, such 
as APIs. We refer readers to section III.D.2. of this final rule for a 
summary of public comments received on the proposed rule regarding 
emerging technologies, such as APIs, and our response to them.
---------------------------------------------------------------------------

    \21\ National Committee on Vital and Health Statistics. (2020, 
August 25). NCVHS Standards Subcommittee on Standards Hearing on 
Request for NCVHS Review of CAQH CORE Operating Rules for Federal 
Adoption. Retrieved from https://ncvhs.hhs.gov/wp-content/uploads/2020/09/Standards-Transcript-8-25-20Final-508.pdf.
---------------------------------------------------------------------------

III. Provisions of the Proposed Rule, Analysis of and Responses to the 
Public Comments Received, and Final Provisions

    In response to the HIPAA Standards for Health Care Attachments 
proposed rule, which appeared in the December 21, 2022 Federal Register 
(87 FR 78438), we received more than 120 timely pieces of 
correspondence commenting on health care claims and prior authorization 
attachments.
    In general, commenters were supportive of HHS's efforts to adopt 
health care claims attachments standards that could potentially 
mitigate

[[Page 14357]]

longstanding issues pertaining to the manual transmission of health 
care claims attachments. Importantly, however, commenters recommended 
that HHS, at this time, adopt only standards for health care claims 
attachments transactions and not for prior authorization attachments 
transactions, as we had also proposed. We explain in this final rule 
that we are confining the scope of this rule's finalized policies to 
claims attachments transactions, and we explain our rationale for not 
finalizing our proposals to adopt the X12N 278 standard for prior 
authorization attachments transactions.

A. Decision Regarding the Adoption of X12N 278--Health Care Services 
Request for Review and Response (006020X315)

    In the HIPAA Standards for Health Care Attachments proposed rule, 
we proposed to adopt Version 6020 of the X12N 278--Health Care Services 
Request for Review and Response (006020X315) as the standard a health 
plan must use to electronically request attachment information from a 
health care provider to support a prior authorization transaction (87 
FR 78447). That standard, we noted, is unique in that it is also used 
for a health care provider's request for prior authorization, as 
reflected in Sec.  162.1302(b)(2)(ii) (87 FR 78447). We also proposed 
to incorporate the same by reference in Sec.  162.920. Version 6020 of 
the X12N 278 standard would have been a modification to the existing 
HIPAA transaction standard, as we previously adopted Version 5010 of 
the X12N 278 standard in the January 16, 2009 Modifications final rule 
(74 FR 3296).
    The X12N 278 standard supports prior authorization transactions for 
health care that has yet to be rendered by the requesting provider, as 
well as responses from health plans for authorizations or for referrals 
to another provider, such as when a provider refers a patient to a 
specialist or for inpatient care.\22\ Using the X12N 278 standard for 
prior authorization transactions, the health plan transmits a response 
to the health care provider. This response contains coded information 
that can then be utilized in a health care claim to indicate that the 
billed items or services were approved by the health plan before being 
rendered, or that a referral to another provider has been approved.
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    \22\ See 45 CFR 162.1301.
---------------------------------------------------------------------------

    After reviewing public comments, we are not adopting an attachments 
standard for prior authorization at this time. Commenters cited limited 
industry experience implementing the X12N 278 standard for prior 
authorization attachments, variability in current prior authorization 
workflows, and potential conflict with other federal interoperability 
initiatives requiring FHIR-based prior authorization API capabilities. 
Instead, we are adopting standards only for health care claims 
attachments. This approach reflects current industry readiness and 
supports administrative simplification while allowing continued 
evaluation of evolving standards for prior authorization.
    Comment: Although several commenters expressed support for HHS's 
efforts to reduce the burden of prior authorizations by adopting 
electronic standards to create a streamlined prior authorization 
process that meets the needs of health plans and providers, more 
commenters opposed HHS's finalizing the proposed adoption of X12N 278 
standard with respect to prior authorization attachments transactions. 
Commenters asserted that: (1) there is a lack of agreement on data 
element standardization within the industry; (2) entities have a wide 
range of prior authorization workflows and common definitions; (3) 
previous attempts to leverage the X12N 278 standard to support prior 
authorizations have failed; (4) the X12N 278 standard for prior 
authorization transactions was never fully implemented in the industry; 
(5) the X12N 278 standard for prior authorization transactions will not 
support the requests or responses of a FHIR-based questionnaire; and 
(6) HHS's goal of efficient, cost-effective, simplified 
interoperability may be impeded by health IT vendors constantly having 
to deal with exceptions due to conflicting requirements across various 
rulemaking efforts.
    Commenters also expressed concern that HHS's proposed X12N 278 
standard for prior authorization attachments transactions that appeared 
in the HIPAA Standards for Health Care Attachments proposed rule may 
conflict with provisions of a CMS proposed (and now finalized) rule 
that appeared nearly simultaneously in the Federal Register, on 
December 13, 2022 titled: ``Medicare and Medicaid Programs; Patient 
Protection and Affordable Care Act; Advancing Interoperability and 
Improving Prior Authorization Processes for Medicare Advantage 
Organizations, Medicaid Managed Care Plans, State Medicaid Agencies, 
Children's Health Insurance Program (CHIP) Agencies and CHIP Managed 
Care Entities, Issuers of Qualified Health Plans on the Federally-
Facilitated Exchanges, Merit-Based Incentive Payment System (MIPS) 
Eligible Clinicians, and Eligible Hospitals and Critical Access 
Hospitals in the Medicare Promoting Interoperability Program'' 
(hereinafter referred to as the CMS Interoperability and Prior 
Authorization proposed rule) (87 FR 76238).
    Commenters also requested clarification or provided HHS with 
certain recommendations for consideration in the event HHS finalized 
the adoption of the X12N 278 standard for prior authorization 
attachments transactions. A commenter recommended that if HHS were to 
adopt the X12N 278 standard, HHS should continue the use of Version 
5010 and not adopt Version 6020 of the X12N 278 standard, asserting 
that it offers no additional functionality, is untested, and may 
contain errors.
    Response: We appreciate the comments submitted in response to our 
proposal to adopt a standard for health care attachments transactions 
that would include the prior authorization transaction standard. Upon 
further consideration, and as we explain herein, we have elected not to 
finalize the prior authorization transaction standard proposal. Rather, 
we are adopting only the standards for health care claims attachments 
transactions. Our decision reflects substantive consideration of 
several interrelated concerns raised by commenters, many of which point 
to foundational issues that could have impeded effective 
implementation.
    First, numerous commenters cited the lack of industry consensus 
regarding data element standardization. Prior authorization processes 
vary widely across health plans, and there is currently no agreed-upon, 
consistent set of data elements that supports a level of automation and 
interoperability consistent with HIPAA Administrative Simplification 
goals. While a standard like the X12N 278 is intended to create a 
unified structure, in practice the diversity of clinical and 
operational use cases would have made its application difficult to 
scale.
    Second, commenters emphasized that prior authorization workflows 
differ significantly across organizations and are often not 
standardized even within the same type of entity. These workflows 
include clinical decision-making, review protocols, timing of 
documentation, and routing processes, all of which influence where and 
how attachment information is requested and supplied. While a technical 
standard could, in theory, be inserted into any

[[Page 14358]]

point in the workflow, the absence of shared operational expectations 
and integration strategies greatly increases the risk of fragmentation, 
workarounds, and vendor-specific implementations, which would undermine 
the goal of interoperability and could increase, rather than reduce, 
provider burden.
    Third, many commenters pointed out that previous attempts to use 
the X12N 278 standard to support prior authorization have not been 
successful. There is limited industry adoption and very few operational 
use cases that demonstrate consistent, real-world functionality of the 
standard in the context of attachments. The lack of implementation and 
testing means that critical issues related to content sufficiency, 
response timing, and payload alignment remain unresolved. Interested 
parties also raised specific concerns that Version 6020 offers no 
additional functional value over Version 5010, and, in fact, could 
introduce unvetted changes that have not been adequately tested or 
validated.
    In addition, we acknowledge commenters' concern that adopting a 
prior authorization attachment standard under HIPAA could conflict with 
requirements of the aforementioned, and now finalized, CMS 
Interoperability and Prior Authorization final rule that appeared in 
the January 17, 2024 Federal Register in which CMS mandated the use of 
a FHIR Prior Authorization Support API by CMS-regulated health plans 
and payers (89 FR 8758).
    We also acknowledge certain commenters' suggestions that the 
current low adoption rate for Version 5010 of the X12N 278 standard may 
itself be attributable to the absence of a mandated prior authorization 
attachments standard. Though that is a plausible contributing factor, 
it would not mitigate the practical concerns about industry readiness, 
data variability, and implementation barriers that commenters 
identified. Simply requiring the use of a standard in this context--
without sufficient groundwork to ensure feasibility and alignment--
would risk ineffective uptake and could impose new burdens rather than 
resolve existing ones.
    In light of these reasonable concerns, we concluded it would be 
imprudent to now proceed to finalize adoption of a prior authorization 
attachments standard, so the finalized policies in this final rule are 
limited to attachments for the health care claims or equivalent 
encounter transactions and associated electronic signature standards. 
This permits us to focus our regulatory resources, and the industry to 
focus its resources, on a narrower set of transactions for which there 
is stronger implementation maturity, standards infrastructure, and 
stakeholder alignment.
    We remain committed to improving the prior authorization process 
and recognize the importance of establishing electronic standards that 
reduce burden and promote interoperability. We will continue to monitor 
testing of alternative transaction standards, including FHIR-based 
solutions, and will continue to engage with industry-led SSOs to 
evaluate readiness for potential adoption of a prior authorization 
attachments standard.

B. Overview of Final Requirements

    Nearly every health plan has various requirements for health care 
providers to submit additional information beyond that contained in a 
HIPAA transaction. A health care provider may transmit this additional 
information in a ``solicited'' or an ``unsolicited'' fashion. In 
solicited transmissions, a health care provider transmits additional 
information pursuant to a health plan's specific electronic request (87 
FR 78444). Conversely, in unsolicited transmissions there are no 
specific electronic requests. Rather, they typically occur pursuant to 
pre-established health plan requirements for health care providers to 
transmit additional information--to support, for example, certain 
diagnoses, items, services, or medications--that are set forth in 
trading partner agreements or other guidance (87 FR 78444).
    Although health care providers may transmit this additional 
information electronically via an attachment to a health care claims 
transaction, today and historically health care providers have 
frequently transmitted the information via burdensome manual processes 
that often involve paper mail, fax, and phone because there have been 
no previously adopted HIPAA standards for health care claims 
attachments.
    We are adopting standards for health care claims attachment 
transactions in this final rule. In doing so, we first define the term 
``attachment information.''

C. Definitions of Attachment Information and Health Care Claims 
Attachments Transaction

    In adopting an attachment transaction standard, we determined we 
needed to define ``attachment information'' and ``health care claims 
attachments transaction.'' We proposed to separately define the two 
terms to prevent the definition of health care claims attachments 
transaction from becoming too unwieldy and further clarify this in our 
responses to comments later in this section.
1. Definition of Attachment Information
    We proposed to define attachment information in Sec.  162.103 as 
documentation that enables the health plan to make a decision about 
health care that is not included in either of the following:
     A health care claims or equivalent encounter information 
transaction, as described in Sec.  162.1101.
     A referral certification and authorization transaction, as 
described in Sec.  162.1301(a) and the portion of Sec.  162.1301(c) 
that pertains to authorization.
    We used the term ``attachment information'' in our proposed 
definition of the health care claims attachments transaction in Sec.  
162.2001 to specify the information transmitted by a health care 
provider or requested by a health plan. The proposed rule discussed how 
the NCVHS recommended defining attachments as ``any supplemental 
documentation needed about a patient(s) to support a specific health 
care-related event (such as a claim, prior authorization, or referral) 
using a standardized format'' (87 FR 78444 and 78445, emphasis in 
original).\23\ We incorporated key aspects of their recommendation into 
our proposed definition of ``attachment information,'' while attempting 
to ensure that the definition was broad and general enough to include 
all possible patient-related information that could be generated with 
respect to health care services. The full discussion of the proposed 
definition of ``attachment information,'' to which we refer readers, 
further details the NCVHS's recommendations for the definition to 
include reference to ``documentation,'' ``supplemental,'' and 
``needed'' (87 FR 78445).
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    \23\ National Committee on Vital and Health Statistics. (2016, 
July 5). Recommendations for the Electronic Health Care Attachment 
Standard. Retrieved from https://ncvhs.hhs.gov/wp-content/uploads/2018/03/2016-Ltr-Attachments-July-1-Final-Chair-CLEAN-for-Submission-Publication.pdf.
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    We solicited public comments on the proposed definition of 
``attachment information'' and received feedback from interested 
parties, which we considered in developing this final rule.
    Comment: Multiple commenters expressed support for the proposed 
definition of attachment information. Some commenters indicated that 
the definition proposed for attachment information sufficiently 
captures what is necessary for solicited and

[[Page 14359]]

unsolicited exchange of supplementary medical information.
    Response: We appreciate commenters' support of our proposed 
definition of ``attachment information.''
    Comment: A commenter agreed that the proposed definition of 
``attachment information'' needs to be broad and general enough to 
include all possible patient-related information that could be 
generated with respect to health care services. The commenter 
acknowledged that HHS explicitly defined the documentation as 
supplemental, meaning it is documentation ``that is not included'' in a 
health care claims or prior authorization transaction, which the 
commenter believed means that the health care attachment standards are 
dependent upon and linked to the accuracy and completeness of these 
other HIPAA transaction standards. The commenter also noted that 
effective adoption of the health care attachments standards is 
impossible without effective adoption of the other standards, and 
requested that HHS actively support and verify the effective use of 
those HIPAA transaction standards, and these health care attachment 
standards once finalized, as HHS did during the health care industry's 
transition from International Classification of Diseases (ICD), Ninth 
Revision (ICD-9) to ICD, Tenth Revision (ICD-10).
    Response: We appreciate the commenter's observations supporting a 
broad and general definition of ``attachment information,'' and agree 
that the definition must be sufficiently inclusive to encompass the 
full range of patient-related documentation a health plan may require 
in support of a health care claim or equivalent encounter transaction.
    We likewise agree with commenters that the finalized definition 
should appropriately exclude documentation already required or 
contained within other adopted HIPAA transaction standards and clarify 
that this exclusion is deliberate and consistent with the principles of 
administrative simplification and the goal of reducing duplicative 
documentation burdens.
    As noted in the HIPAA Standards for Health Care Attachments 
proposed rule, we initially proposed a definition of ``attachment 
information'' that would have applied with respect to both claims and 
prior authorization transactions. For the reasons articulated in 
section III.A. of this final rule, we are not finalizing adoption of a 
prior authorization attachment transaction standard, so the finalized 
definition of ``attachment information'' applies only in the context of 
health care claims or equivalent encounter information transactions. 
This narrowed scope is reflected in the revised definition we are 
finalizing in Sec.  162.103, which specifies that ``attachment 
information'' is documentation that enables a health plan to make a 
decision about health care that is not included in a health care claims 
or equivalent encounter information transaction, as described in Sec.  
162.1101.
    Comment: Several commenters suggested changes to the proposed 
definition of ``attachment information'' or associated requirements on 
health plans. A commenter recommended that the definition be revised to 
state that attachment information should ``enable providers to make 
decisions about what healthcare content the payer requires in the 
healthcare attachment.'' Another commenter suggested that HHS dictate 
that payers, after receipt of an initial attachment, not be able to 
serially add documentation requirements.
    A different commenter was concerned that too broad a definition 
could allow payers to require supplemental documentation for routine 
care such as vaccines, well child visits, or routine prescriptions, 
which could potentially increase financial burden on small and 
independent pediatricians who provide safety net care to rural or low-
income or both populations. That commenter recommended that HHS 
consider adopting the NCVHS's definition of ``attachment information'' 
as it only included supplemental information without which a claim 
could not be properly adjudicated.
    Response: We appreciate the commenters' concerns but do not believe 
it is appropriate or necessary to modify the definition of ``attachment 
information'' to account for such concerns as our proposal was intended 
to identify the type of documentation exchanged. Ultimately, payers' 
business and payment-decision rules fall outside the scope of HIPAA. In 
other words, though we appreciate that health care providers may 
experience added burden should health plans request additional 
documentation following an initial submission, HIPAA transaction 
standards govern the format and content of the electronic exchange, not 
payers' business practices or the quantum of documentation they may 
require. Therefore, we are finalizing a slightly modified definition of 
``attachment information,'' revised only to account for the fact that 
we are not adopting prior authorization attachments standards.
    We also continue to believe that it is crucial that the definition 
of ``attachment information'' in HHS's administrative simplification 
implementing regulations be broad and general enough to apply to all 
situations where a health plan requires attachment information to 
support a health care claims or equivalent encounter information 
transaction. In this final rule, we are adopting a definition of 
``attachment information'' that incorporates key aspects of the NCVHS's 
definition. Though our definition of ``attachment information'' does 
not include the NCVHS-recommended term ``supplemental,'' it 
incorporates that concept as it specifies documentation ``that is not 
included'' in a health care claims or equivalent encounter information 
transaction, as described in Sec.  162.1101, to express that the 
documentation would be supplemental.
    In our finalized definition, we chose not to limit the definition 
strictly to documentation without which a claim ``could not be 
adjudicated,'' as suggested by the commenter, because such a narrow 
framing may not accommodate the diversity of documentation that 
different health plans may reasonably require based on their benefit 
structures, medical necessity criteria, or regulatory obligations. For 
example, certain documentation may not by itself determine a claim's 
payability but may still be necessary under specific plan policies or 
for administrative or compliance purposes.
    The commenter was concerned that a broad definition of ``attachment 
information,'' such as the definition being finalized in this rule, 
could prompt health plans to require documentation for routine 
services, which could administratively or financially burden small 
health care providers, especially those serving rural or underserved 
populations. However, we note that nothing prohibits a health plan from 
requiring such documentation today under the manual processes currently 
in widespread use (which are more labor and resource intensive than an 
electronic transaction). Therefore, we do not agree that finalizing 
this definition of ``attachment information'' or the adoption of a 
standard for health care claims attachments in and of themselves would 
cause health plans to make broad requests for documentation. We also 
believe the definition we are finalizing appropriately balances 
flexibility with restraint by tying the use of attachment information 
directly to a standard claims or equivalent encounter transaction and 
explicitly excluding any information already required by the 
transaction standard itself, which would ensure that attachment 
information is supplemental in nature and transaction-

[[Page 14360]]

specific while also providing sufficient adaptability across diverse 
payer-provider contexts.
    Comment: Multiple commenters stated that there was a critical need 
to improve the clarity of the proposed definition of ``attachment 
information'' as they believed the scope of the proposed definition 
could be expansively interpreted as applying to all use cases, 
permitting a ``kitchen sink'' approach to the eligible activities to 
which the mandated standards would apply, rather than the definition of 
``attachment information'' being tied to ``a specific transaction'' 
such as the claims transactions. The commenters further stated that the 
proposed definition potentially would include any information exchange 
between a health care provider and other information source (for 
example, a clinical laboratory or immunization registry) and a health 
plan.
    Response: We reiterate that we believe the definition of the term 
``attachment information'' is adequately narrow. In the proposed, and 
finalized, definition of the health care claims attachments transaction 
in Sec.  162.2001, ``attachment information'' refers to information 
transmitted by a health care provider or requested by a health plan 
that is necessary to make a decision about a health care claim and that 
is not included in the standard health care claims or equivalent 
encounter transaction, as described in Sec.  162.1101. Though the 
definition must be sufficiently broad to encompass the various 
documentation that a health plan may require ``to make a decision about 
health care,'' it also must be clearly tied to the health care claim or 
equivalent encounter transaction. The finalized definition does not 
apply to all information exchanges between health care providers and 
other entities nor does it permit a ``kitchen sink'' approach to its 
application. It also would not authorize any action beyond those 
already permitted under health plan policies.
    Therefore, we continue to believe the finalized definition of 
``attachment information'' in Sec.  162.103 appropriately balances 
clarity and flexibility, ensuring that it is broad enough to be 
functional in practice while remaining anchored to a defined 
transaction use case.
    Comment: A commenter stated that they interpreted the language in 
the proposed definition of ``attachment information'' as not being 
inclusive of information needed for fraud, waste, and abuse purposes. 
The commenter recommended that HHS include a reference to fraud, waste, 
and abuse in the definition of ``needed'' in the proposed definition of 
``attachment information.'' The commenter also pointed to HHS's 
language in the Executive Summary, part A, that the purpose of [the 
proposed] rule is to ``determine the necessity of a health care service 
as part of making a coverage decision'' and stated that fraud, waste, 
and abuse must be considered when a service is deemed medically 
unnecessary in order to maintain CMS program integrity.
    Response: The definition of ``attachment information'' adopted in 
this final rule is intended to ensure that health plans have the 
documentation necessary to support proper claims processing and payment 
determinations. While this information may inform a payment 
determination, the determination itself may also depend on additional 
factors such as plan policies or clinical review requirements. 
Accordingly, certain documentation may be necessary for evaluating 
coverage without being solely determinative of claim adjudication. This 
approach would also allow health plans to use attachment information 
for administrative purposes, including fraud, waste, and abuse 
detection and prevention, without requiring a separate explicit 
reference to these activities in the definition.
2. Definition of the Health Care Claims Attachments Transaction
    In the HIPAA Standards for Health Care Attachments proposed rule, 
we proposed to add a new Subpart T to 45 CFR part 162--Health Care 
Attachments (87 FR 78446). In Subpart T, in Sec.  162.2001, we proposed 
to define the ``health care attachments transaction'' for health care 
claims transactions and prior authorization transactions. Specifically, 
we proposed that any of the following different types of transmissions 
would constitute a ``health care attachments transaction'': (1) the 
transmission of attachment information from a health care provider to a 
health plan in support of a referral certification and authorization 
transaction or in support of a health care claims or equivalent 
encounter transaction; and (2) a request from a health plan to a health 
care provider for attachment information. For each type of 
transmission, we specified the entity type from which the transaction 
is being transmitted and to which it is being sent, the information 
being transmitted, and the purpose of the transmission. We noted that 
the overarching purpose for each type of transmission--to enable a 
health plan to make a decision about health care--is incorporated into 
the definition of ``attachment information.'' We further specified the 
purpose for the two transmission types in Sec.  162.2001(a), as 
discussed later in this section.
    Because we are adopting only an attachment standard for health care 
claims, as that term is used in this rule to include health care claims 
or equivalent encounter information transactions, and not a standard 
that includes the prior authorization transaction, in Sec.  162.2001 we 
rename what we had called the ``health care attachments transaction'' 
to the ``health care claims attachments transaction.'' \24\ The 
finalized definition has been revised from what we had proposed to 
remove language specific to prior authorization (that had read in part, 
``in support of a referral certification and authorization 
transaction'') and reformat the outline structure to account for that, 
so that it applies exclusively to claims attachments. Aside from that, 
the definition remains the same as we had proposed.
---------------------------------------------------------------------------

    \24\ As we observe at n.4, while this also includes ``equivalent 
encounter information'' transactions (Sec.  161.1101(b)), 
attachments more likely would be requested for health care claims 
(Sec.  161.1101(a)) involving payment as opposed to the 
``transmission of encounter information for the purpose of reporting 
health care.''
---------------------------------------------------------------------------

    In the HIPAA Standards for Health Care Attachments proposed rule, 
to align with the proposed rule's scope which addressed health care 
attachments for health care claims or equivalent encounter information 
and prior authorization transactions, we also proposed to make a 
conforming change to the definition of ``transaction'' in Sec.  
160.103. We proposed to replace ``(10) Health claims attachments'' with 
``(10) Health care attachments'' (87 FR 78446). Because we are not 
adopting the prior authorization attachments standards, we are not 
finalizing this proposed change. But, to align with the focus on health 
care attachments for health care claims or other equivalent encounter 
information transactions, we retain the word ``care'' from our proposal 
and are finalizing the definition of ``transaction'' with modification, 
so it reads ``Health care claims attachments.''
    Comment: The majority of commenters who provided feedback on our 
proposed definition of the health care attachments transactions opposed 
the proposal. A commenter stated that because the proposed definition 
refers to attachments for both claims and prior authorization 
transactions and not just claims, it arbitrarily collapsed the two use 
cases into one definition, to which the commenter objected. The 
commenter indicated that using attachments for prior authorization 
transactions diverges from the statutory

[[Page 14361]]

construct, which could result in confusion and difficulty unraveling 
them down the road.
    Another commenter recommended that the proposed health care 
attachments transaction definition include only attachment information 
created and maintained by a health care provider and explained that the 
proposed definition was too broad and could lead to the capture of all 
possible patient-related health services information. The commenter 
stated that such a broad definition might inadvertently cause 
disruption to claim adjudication processes and place a greater burden 
on health care providers, believing that it would not limit attachment 
information to only what was needed for a plan to make decisions about 
care. Instead, a health plan might demand all possible patient-related 
information that could be generated with respect to health care 
services before deciding whether or not to cover an item or service or 
when conducting a post-payment audit. The commenter also stated that 
health care entities, such as laboratories, do not create or routinely 
maintain all possible patient-related information that could be 
generated with respect to health care services; do not routinely 
receive electronic attachment information from clinicians; and cannot 
transmit this information to health plans when requested to support 
claims processing. The proposed definition, the commenter claimed, 
could cause laboratories to receive innumerable requests from health 
plans for electronic attachment information that they did not create 
and do not maintain.
    Response: As discussed in section III.A. of this final rule, 
numerous commenters opposed our proposal to adopt a health care 
attachment standard to include prior authorization as a use case and 
opposed the adoption of a standard for prior authorization attachments 
transactions, and, after further consideration, we are not finalizing 
adoption of a standard for prior authorization attachments 
transactions. We further note that the health care claims attachment 
definitions and standards we are adopting in this rule do not include 
references, or otherwise extend, to prior authorization attachment 
transactions.
    Our proposed definition of the ``health care attachments 
transactions'' was intended to encompass the different types of 
transmissions such a transaction would encompass. For each type of 
transmission, we specified the entity type from which the transaction 
would be transmitted and to which it would be sent, the type of 
information being transmitted, and the purpose for the transaction. We 
also noted in the HIPAA Standards for Health Care Attachments proposed 
rule that the overarching purpose for the two types of transmissions 
was to enable a health plan to make a decision about health care in 
support of the health care transaction and that specification of the 
information transmitted by a health care provider or requested by a 
health plan in support of the transaction was incorporated into the 
definition of attachment information (87 FR 78446).
    We emphasize that HIPAA transaction standards govern the format and 
conduct of electronic transactions; determinations about the amount or 
type of documentation that a health plan may request in support of 
adjudication remain subject to health plan business rules and other 
governing law. The term ``attachment information,'' as defined in our 
finalized definition at Sec.  162.103, is limited to documentation not 
included in a standard claims transaction that enables a health plan to 
make a decision about health care. These limitations ensure that the 
standard does not encompass all conceivable patient-related 
information.
    We also clarify that this rule does not create new requirements for 
entities that do not originate or maintain the documentation at issue. 
The standard applies only to the exchange of documentation that a 
health care provider or other covered entity already maintains and 
transmits as part of a claims adjudication process.
    Final Action: After considering the public comments, and for the 
reasons discussed previously, in Sec.  162.103, we are finalizing, with 
modification, the definition of ``attachment information'' as: 
documentation that enables the health plan to make a decision about 
health care that is not included in a health care claims or equivalent 
encounter information transaction, as described in Sec.  162.1101.
    We are also finalizing the addition of a new Subpart T to 45 CFR 
part 162--Health Care Claims Attachments. In Subpart T, in Sec.  
162.2001, we are finalizing the definition of the ``health care claims 
attachments transaction'' as the transmission of either of the 
following:
     Attachment information from a health care provider to a 
health plan in support of a health care claim or equivalent encounter 
information transaction, as described in Sec.  162.1101.
     A request from a health plan to a health care provider for 
attachment information.
    Last, because we are not adopting an attachments standard for prior 
authorization transactions in this final rule, as discussed in section 
III.A. of this final rule, we are finalizing, with modification, the 
proposed definition of ``transaction'' in Sec.  160.103 by amending 
paragraph (10) to add the word ``care,'' (Health care claims 
attachments).''

D. Attachments Transaction Standards

    In the HIPAA Standards for Health Care Attachments proposed rule 
(87 FR 78445 through 78451), we proposed to adopt certain industry 
consensus standards that, when used together, provide the functionality 
necessary for the transmission of electronic health care attachment 
information.\25\ The standards being adopted in this final rule are for 
requesting and transmitting attachment information. In this section, we 
describe the new requirements for covered entities to use: (1) certain 
X12N standards for requesting and transmitting attachment information 
and HL7 standards for clinical information content; and (2) electronic 
signatures standards. We also describe how the HL7 Attachments IG 
utilizes the LOINC code set to identify attachment information in a 
consistent manner.
---------------------------------------------------------------------------

    \25\ For additional information about the business and 
operational processes involved in the exchange of these standards, 
we refer readers to the aforementioned November 2017 WEDI whitepaper 
and the HL7 CDA[supreg] R2 Attachment Implementation Guide: Exchange 
of C-CDA Based Documents, Release 1 (Universal Realm) for more 
technical information. Both are available at: https://build.fhir.org/ig/HL7/CDA-ccda-2.1-sd/.
---------------------------------------------------------------------------

1. Electronic Health Care Claims (or Equivalent Encounter Information) 
Attachments Transactions
    Health plans often require health care providers to submit 
additional information in association with the claims payment process. 
Additional information is frequently in a format, such as medical 
imaging or free text, not supported by the discretely defined health 
care claims transaction standard data fields. Claims payment is a 
multi-step process that may include pre-payment review, payment 
adjudication, and post-payment activities such as audits or recoupment 
reviews. The claims attachment transaction standards adopted in this 
final rule apply to the transmission of solicited and unsolicited 
attachments used in support of these stages of the claims payment 
process, including post-payment review activities related to claim 
adjudication. These standards do not apply to attachments exchanged as 
part of a separate claims appeal or dispute resolution process. Appeals 
and related

[[Page 14362]]

transactions are outside the scope of this rule and would require 
separate standards to be adopted through future rulemaking.
    In the HIPAA Standards for Health Care Attachments proposed rule, 
we proposed to adopt standards for requesting and transmitting 
attachment information, and to define attachment information in Sec.  
162.103, as documentation that enables the health plan to make a 
decision about health care that is not included in a health care claim 
or equivalent encounter information transaction, as described in Sec.  
162.1101. We also proposed to adopt X12N standards with respect to the 
transmission of attachment information and HL7 standards with respect 
to the clinical content of attachments. Specifically, as detailed in 
the sections that follow, we proposed to adopt three X12N TR3 
implementation specifications for health care claims attachments (87 FR 
78445) and three HL7 IGs for the clinical information embedded in those 
transactions (87 FR 78445).
a. Scope of Health Care Claims Attachments Transactions
    Section 1173(a) of the Act requires the Secretary to adopt 
standards for ``health claims attachments,'' and section 1104(c)(3) of 
the Affordable Care Act reiterated that requirement, directing the 
Secretary to promulgate a final rule to adopt a transaction standard 
and a single set of associated operating rules. In the proposed rule, 
we stated that the proposed attachments standards would satisfy the 
requirement to adopt a standard to support health care claims but would 
also support prior authorization transactions (87 FR 78445). Because, 
as we have already explained, in this final rule we are finalizing only 
a definition for ``health care claims attachments,'' we use that term 
to refer to attachments for health care claims or equivalent encounter 
information transactions rather than the proposed rule's broader 
``health care attachments'' phrase that was intended to include both 
the claims and prior authorization transaction standards.
    We did not propose to adopt attachments standards for all health 
care transaction business needs. Rather, we stated that not only would 
it be challenging to identify standard specifications and appropriate 
codes for the full array of different health care attachment types used 
today, but also that it was important that covered entities gain 
experience with a limited number of standard electronic attachment 
types so that technical and business issues could be identified to 
inform potential future rulemaking for other electronic attachments 
standards (87 FR 78446).
    We requested comments on alternative standards and approaches that 
could address the challenges described in section I.A. We summarize and 
respond to public comments submitted in response to this request in the 
next section.
2. Adoption of Electronic Health Care Claims Attachments Transaction 
Standards
    In the proposed rule, we highlighted the NCVHS's July 5, 2016 
recommendations to the Secretary on attachments standards, which are 
the same standards we proposed to adopt (87 FR 78446 and 78447). We 
title this section to only refer to the health care claims attachments 
standards that we are adopting in this final rule and emphasize that 
prior authorization attachments standards are not adopted in this final 
rule. But, because our proposal had been broader by including prior 
authorization attachments standards and thus generated comment on the 
broader proposal, our comment summaries and responses do include some 
discussion of the full scope of what had been proposed.
    As mentioned in the proposed rule, and discussed again in section 
II.D.3. of this final rule, section 1104(c)(3) of the Affordable Care 
Act requires that the adopted attachments standard be ``consistent with 
the X12N Version 5010 transaction standards'' (87 FR 78440), which we 
interpret as requiring that the health care claims attachment 
implementation specifications we adopt should generally be compatible 
with X12N standards. Thus, any standard we adopt for health care claims 
attachments should be electronically transmitted by an X12N transaction 
standard in the same transaction.
    While the NCVHS did not recommend specific versions of the X12N 
attachments standards, we proposed to adopt X12N Version 6020 for both 
the X12N 277--Health Care Claim Request for Additional Information 
(006020X313) and the X12N 278--Health Care Services Request for Review 
and Response Version (006020X315) as the standards a health plan must 
use to electronically request attachment information from a health care 
provider to support a prior authorization transaction. We proposed to 
adopt Version 6020 of the standards because they better harmonize with 
the X12N 275--Additional Information to Support a Health Care Claim or 
Encounter (006020X314) and the X12N 275--Additional Information to 
Support a Health Care Services Review (006020X316) (87 FR 78447), and 
we refer readers to the proposed rule for the full discussion of the 
use of these standards and their compatibility (87 FR 78446).
    Comment: Multiple commenters supported the proposed attachment 
standards, noting the approach would enable continuous advancements in 
standards-based attachment content. Commenters underscored the 
importance that uniform standard requirements would have on furthering 
industry adoption of automated claims processes, which would help 
reduce the current manually intensive administrative burden, and, 
therefore, reduce costs. Similarly, one commenter stated that adopting 
unified standards would eliminate the need for proprietary data 
programs, reduce handling and processing time, eliminate the risk of 
lost paper documents, and, thereby, reduce administrative burden and 
lower costs.
    Another commenter supported HHS's proposals to apply attachment 
standards for health care claims and prior authorization transactions. 
The commenter noted that while some in the industry are concerned with 
the lack of alignment in prior authorization standards (X12 versus 
FHIR), they agreed with HHS's proposed approach since the absence of an 
electronic attachments standard had contributed to low industry 
adoption rates for electronic prior authorization (ePA) transactions.
    A commenter noted that, currently, health plans have requirements 
for submitting supporting documentation that health care providers must 
follow and that health plans may request further information from a 
health care provider to make an authorization decision. The commenter 
noted that health care providers must submit this information via 
burdensome manual processes through mail, fax, or a portal, with each 
health plan having different requirements. The commenter further noted 
that every player has a different portal to submit attachments, and 
managing the many access usernames and passwords is also burdensome. 
Therefore, the commenter stated that a standard attachment process, via 
a standardized electronic format, would greatly improve the process.
    Another commenter noted that payers and providers would benefit 
from having a unified submission method for documents needed for prior 
authorization, claims, quality, audit, and other use cases. Another 
commenter stated that adopting the X12 standards

[[Page 14363]]

and C-CDA standards would improve patient outcomes.
    Response: We thank commenters for the feedback on and support of 
our proposals. After careful consideration, we are adopting standards 
for health care claims attachments transactions to help combat the 
burdensome manual processes health care providers face today when 
transmitting supporting documentation required by health plans in 
association with the claims payment process. We agree with commenters 
that adopting standards for health care claims attachments will yield 
numerous benefits, including reducing administrative burden and costs, 
removing the need for proprietary data programs, cutting lengthy 
processing times, and eliminating the risk of lost paper documents. 
However, for the reasons extensively discussed in section III.A. of 
this final rule and as noted repeatedly elsewhere, we are limiting the 
scope of this rulemaking solely to the adoption of standards for health 
care claims attachments transactions.
    Comment: Multiple commenters noted that the technology and 
regulatory spaces have significantly evolved over the years, with some 
expressing concern that HHS's proposals demonstrated ``2016-based 
thinking'' by proposing the use of X12N standards, which they stated 
would make the evolution of requesting and responding to supplemental 
data needs harder and more burdensome. One of these commenters noted 
that, while they support a national attachments standard for claims and 
prior authorizations, more flexible technologies are available that 
would reduce complexity. A commenter requested that HHS consider 
updating the required attachment standards as new methods are 
introduced and real-world tested. Another commenter stated that HHS 
proposed outdated standards, and that HHS should not require adherence 
to standards that would move the industry backward. Further, a 
commenter expressed concern about how the proposed standard 
requirements would fit into the business process for most health care 
provider organizations and expressed that even though discussion 
included in the proposed rule was about physically capturing data 
elements and the transport mechanisms, a more holistic approach would 
be required to bring the technical capabilities into a product suite to 
work for the end user. Another commenter expressed that by focusing on 
a document-based, as opposed to a data-driven, approach, HHS was 
proceeding down a standards pathway that would make the attachment 
standards incongruent with the standards mandated in other proposed and 
final rules, such as the CMS Interoperability and Prior Authorization 
proposed rule (87 FR 76238). Multiple commenters expressed concern 
regarding the proposal to adopt standards for prior authorization 
attachments transactions and recommended that HHS bifurcate the claims 
attachments and prior authorization attachments standards proposals to 
finalize only the proposed claims attachments standard. A commenter 
noted that section 1173(a)(1)(A) of the Act specifically calls for the 
establishment of a claims attachment standard, but contains no 
provision requiring prior authorization attachments.
    Response: We thank commenters for their feedback on the proposed 
attachment standards and their observations about broader health IT and 
standards development trends. We acknowledge that industry technologies 
and regulatory requirements have evolved significantly since 2016 and 
agree that any adopted standard must balance progress with stability. 
Newer technologies may offer long-term potential to reduce complexity 
and improve flexibility in transmitting supplemental clinical 
information, and we will continue to consider their technical viability 
and operational maturity across a broad segment of the industry. The 
X12N standards for health care claims attachments that we finalize here 
have been used for many years in related HIPAA transactions, are 
supported by widely adopted infrastructure, and offer a known path for 
implementation and compliance. Standardizing attachments through X12N 
Version 6020 allows for the exchange of clinical content in a format 
that aligns with other existing administrative transactions, increases 
health care provider and health plan efficiency and reduces the need 
for burdensome manual submission processes.
    While the 2016 NCVHS recommendation mentioned earlier noted the 
value of a broader attachments strategy that could extend beyond claims 
to include prior authorization, referrals, and other use cases, and 
although we had originally proposed a broader strategy to include other 
use cases, this final rule focuses specifically on claims attachments. 
This narrower scope is consistent with section 1173(a)(1)(A) of the 
Act, which requires the Secretary to adopt a health claims attachments 
transactions standard.
    With respect to interoperability, we have taken the CMS 
Interoperability and Prior Authorization final rule (89 FR 8758) into 
consideration, and note that adopting a consistent, national claims 
attachment standard supports broader goals of administrative 
simplification and compatibility across systems.
    Comment: A commenter stated that the proposed rule's reference to 
the limited uptake of the current referral certification and 
authorization transaction standard being due to not having established 
standards for attachments (87 FR 78446) may be a result of an onerous 
process for certification and authorization. The commenter stated that 
if limited uptake of the referral certification and authorization 
transactions is a standards issue, it is imperative that the new 
attachments standard be simple and practical in order to improve 
compliance rates.
    Response: We thank the commenter for this input. We acknowledge 
that the limited uptake of the current referral certification and 
authorization transaction standard (X12N 278 Version 5010), which 
supports prior authorization, has been documented in multiple reports, 
but that is separate from the adoption of standards for health care 
claims attachments, which we are finalizing in this rule. We agree that 
any future attachment standards, particularly for prior authorization, 
must be practical and simple to implement in order to improve adoption 
rates. Past experiences with low utilization of the referral 
certification and authorization transaction, as mentioned in the 2016 
NCVHS Hearing on attachments, demonstrate that overly complex standards 
or processes can pose barriers to adoption, even when standards are 
available. For this reason, simplicity in aligning with existing 
industry workflows, and coordination with SSOs and interested parties, 
are central considerations in our policy development as we continue to 
evaluate prior authorization attachments options.
    Comment: Multiple commenters, citing numerous rationales, 
encouraged HHS to consider implementing the FHIR standard, including 
the HL7[supreg] FHIR[supreg] Da Vinci Clinical Data Exchange (CDex) IG, 
for prior authorization attachments transactions. At the larger policy 
level, commenters described FHIR as an alternative standard aligned 
with federal and industry interoperability objectives, consistent with 
administrative simplification principles, and synergistic with 
certified EHR capabilities. At the practical level, commenters cited 
FHIR's flexibility and the efficiency of FHIR questionnaires, its 
ability to support end-to-end prior authorization and provide automated 
and real time solutions, and its being a

[[Page 14364]]

more modern technology. Multiple commenters expressed concern regarding 
HL7 C-CDA unstructured document media types not supporting FHIR bundles 
(for example, application/json+fhir). Commenters also noted that use of 
the FHIR standard would allow systems to adopt FHIR specifications to 
enable greater advancements within the health care industry.
    Multiple commenters expressed concern over HHS proposing two rules 
that included proposals on prior authorization: (1) the HHS HIPAA 
Standards for Health Care Attachments proposed rule (87 FR 78438); and 
(2) the CMS Interoperability and Prior Authorization proposed rule (87 
FR 76238). Commenters noted that across these two rules, HHS and CMS 
proposed the use of two different standards, X12N and FHIR, for prior 
authorization transactions, which would require implementation of both 
standards and be confusing and cumbersome. A commenter expressed that 
doing so would be counterproductive to the goals of administrative 
simplification. Another commenter noted that adopting both X12N and 
FHIR standards would create confusion for providers, insurers, and 
vendors that could lead to delays in prior authorization processing and 
approvals, increased costs, and would likely result in providers using 
solely the X12N standard despite incentives to use the FHIR standard. 
Multiple commenters expressed support for the use of FHIR, citing a 
desire for alignment with the CMS Interoperability and Prior 
Authorization proposed rule. A commenter requested that HHS review the 
standards proposed in the CMS Interoperability and Prior Authorization 
proposed rule and allow providers to utilize both FHIR and X12 
standards to meet the requirements in both rules, while another 
suggested we be thoughtful in considering how HHS's proposal aligns 
with CMS's proposal so as to avoid providers' duplication of efforts.
    A commenter also recommended that HHS allow data-element driven 
data sharing via FHIR APIs, which would enable flexibility for targeted 
requests. Despite a stated preference for health care providers to 
adopt the FHIR standard and connect to APIs once finalized, a commenter 
recognized there would be providers that lack the means to finance 
their vendors' FHIR updates. They therefore proposed the adoption of a 
safe harbor for providers that would allow for the use of Version 5010 
of the X12N 278 standard for prior authorization transactions and the 
X12N 275 standard for claims transactions.
    Response: We appreciate these comments and thank commenters for 
sharing these important considerations. In its most recent letter to 
the Secretary (March 30, 2022), the NCVHS recommended that HHS move 
forward with publishing a claims attachments rule to address 
longstanding industry needs, while also continuing to monitor and 
consider emerging standards.\26\ As discussed extensively in section 
III.A. of this final rule and as reiterated elsewhere, we are not in 
this final rule adopting attachment standards for prior authorization 
transactions. We note that the NCVHS's March 30, 2022, letter also 
recommended that CMS publish the CMS Interoperability and Prior 
Authorization proposed rule, which included proposals for FHIR-based 
APIs to support prior authorization workflows. This underscores both 
the ongoing demand for a claims attachments standard today and the 
importance of continuing to evaluate newer technologies for prior 
authorization and other use cases. We therefore finalize a claims 
attachments standard in this rule while leaving open the opportunity to 
adopt alternative standards applicable to prior authorization in other 
rulemaking.
---------------------------------------------------------------------------

    \26\ National Committee on Vital and Health Statistics. (2022 
March 30). Recommendations to Modernize Aspects of HIPAA and Other 
HIT Standards to Improve Patient Care and Achieve Burden Reduction. 
Retrieved from https://ncvhs.hhs.gov/wp-content/uploads/2022/04/Recommendation-Letter-HIT-Standards-Modernization-to-Improve-Patient-Care-March-30-2022.pdf.
---------------------------------------------------------------------------

    Comment: A commenter noted that while they expect claims 
transactions to remain X12-based, the industry and technology have 
evolved significantly and are moving toward FHIR standards. Another 
commenter underscored the need for claims attachments standardization 
but noted industry concern with the specific technology proposed for 
the prior authorization attachments standard. The commenter stated that 
HIPAA regulations view the claims and prior authorization attachment 
standards separately, and that the claims process occurs after care has 
been delivered, as opposed to the prior authorization process which 
occurs in advance of care. Given the different workflows and points at 
which these two processes occur, the commenter stated the need for the 
processes to mirror one another or be adopted in tandem is diminished. 
A commenter stated that the proposed standards are an interim step to 
move health care providers and payers to electronic data submission. 
However, the commenter noted that to further advance ePA processes and 
reduce administrative burden, it is critical to align prior 
authorization attachments standards across all components of the ePA 
process, which includes the transmission of clinical information via 
health care attachments.
    Response: We thank commenters for their perspectives on the need 
for attachment standards in both the health care claims and prior 
authorization contexts and agree that claims and prior authorization 
serve distinct business functions and operate under different 
workflows, with prior authorization typically occurring before items or 
services have been rendered and claims typically occurring afterwards.
    In this final rule, as repeatedly noted, we have elected to adopt 
standards only for health care claims attachments. That focused 
approach accommodates the requirement at section 1173(a)(2)(B) of the 
Act that the Secretary adopt standards for the health claims attachment 
transaction and public feedback recommending that we not simultaneously 
finalize claims and prior authorization attachments standards in the 
same final rule. Finalizing only claims attachments standards now 
allows the industry to begin realizing the benefits of increased 
automation that reduces administrative burden, while providing 
additional time to align on prior authorization attachment standards in 
future rulemaking. We acknowledge the growing interest in APIs, such as 
FHIR based approaches, particularly for prior authorization 
transactions, and that FHIR for API-driven data exchange has already 
been adopted in other regulatory contexts, such as the CMS 
Interoperability and Prior Authorization final rule (89 FR 8758).
    Finally, we emphasize that the decision not to adopt a standard for 
prior authorization attachments in this final rule should not be 
interpreted as abandoning the goal of reducing burden in that area. To 
the contrary, we recognize that prior authorization remains a major 
challenge across the health care system, and our action here is 
intended to allow targeted progress on claims attachments while 
maintaining flexibility to support emerging standards for prior 
authorization attachments through separate HHS-led policymaking efforts 
coordinated with interested parties, including health plans, health 
care providers, and industry. We encourage the participants in the 
standards development community to continue to explore how emerging 
paradigms for information exchange can be extended to address HIPAA 
transactions, and we welcome

[[Page 14365]]

further dialogue with interested parties about promising approaches.
    Comment: A commenter highlighted the significant burden on health 
plans to ensure their systems can support the standards for health care 
claims and prior authorization attachments transactions for structured 
and unstructured documents. The commenter stated that by adopting an 
approach in the final rule whereby a health plan would be compliant by 
implementing the use of either, but not necessarily both, structured or 
unstructured claims and prior authorization documents by the compliance 
date, HHS could ease health plans' burden as they work to ensure their 
systems can accommodate structured and unstructured documents for 
claims and prior authorization attachments transactions. The commenter 
also noted that HHS could, under such an approach, require that health 
plans implement the other document type (whether structured or 
unstructured) within 1 year of the compliance date.
    Response: Consistent with section 1104(c)(3) of the Affordable Care 
Act, we are finalizing a compliance date of 24 months after the 
effective date of this final rule by which all covered entities must 
comply. We believe that the fact that we are not finalizing adoption of 
a prior authorization attachments transaction standard ought to 
diminish the commenter's burden concerns. HIPAA covered entities will 
have to support structured and unstructured document types, but we 
understand the health care industry is moving in that direction and 
should be able to fully accommodate the requirement within this final 
rule's compliance timeframe. We encourage all HIPAA covered entities to 
begin testing their systems early to ensure smooth implementation.
    Comment: A commenter noted that current HIPAA regulations do not 
require health plans to send X12N 277 (Health Care Claim Acknowledgment 
or Claim Status Response) transactions as a response to an X12N 837 
(health care claim) or X12N 278 (standard for prior authorization) 
transaction. The commenter requested that HHS confirm whether any 
requirements finalized by this rulemaking would result in a health plan 
being required to respond to a X12N 837 or X12N 278 transaction with 
the X12N 275 (Additional Information to Support a Health Care Claim or 
Encounter) standard to inform the provider of whether the attachment 
information is needed. The commenter also requested clarification as to 
whether a health plan that may require an attachment for a claim or 
prior authorization may then deny the corresponding claim or item or 
service authorization should a provider fail to provide the attachment, 
which would have the effect of requiring the provider to resubmit the 
claim or prior authorization request with the appropriate attachment 
information.
    Response: We appreciate the commenter's feedback and the 
opportunity to clarify the requirements for how health plans may 
request attachment information, while also reiterating that HIPAA 
specifies transaction standards requirements but does not directly 
address health plans' business rules. HIPAA regulations do not now (and 
this final rule does not alter this) require health plans to use the 
X12N 275 transaction to respond to an X12N 837 health care claim or an 
X12N 278 prior authorization transaction when requesting additional 
documentation. In other words, the X12N 275 standard may be used to 
support claim attachments, but HIPAA does not require its use as a 
mandatory response transaction.
    Similarly, currently, the X12N 277 transaction may be used to 
notify a provider that claim attachment information is needed. HIPAA 
does not require its use, but health plans may elect to use it to 
communicate with health care providers about missing documentation. 
Health plans' business rules typically would specify when they may or 
may not deny a claim for failure to comply with health plan policies. 
While we do not currently require the use of the X12N 275 and X12N 277 
transactions in these scenarios, we encourage health plans to adopt 
clear and consistent communication practices, including using these 
transactions where appropriate, to minimize administrative burden and 
avoid unnecessary claim denials.
    Comment: Multiple commenters supported the proposed adoption of 
Version 6020 for the X12N 275, X12N 278, and X12N 277 standards. A 
commenter stated that adopting Version 6020 for these standards would 
be critical to attachment transactions functionality because Version 
6020 includes two key fields: (1) the health plan assigned claim 
control number to aid with claim reassociation; and (2) the field to 
capture LOINC for required data elements to identify the specific 
attachment information. A commenter expressed their appreciation for 
Version 6020 being tested and implemented in real-world settings.
    Response: We thank commenters for their feedback and support of 
Version 6020 of the standards as a business case in adopting a health 
care claims attachments transaction standard.
    Comment: Multiple commenters expressed concern about HHS's proposal 
to adopt Version 6020 and, instead, recommended that we adopt a newer 
version of the X12N attachments standards, such as Version 8020, which 
a commenter noted has been published. A commenter supported the 
adoption of Version 6020 of the X12N 275 and X12N 277 standards but 
recommended that the attachments standards be updated to Version 8020 
when possible, while another commenter expressed concern that we would 
adopt Version 6020 when X12 may recommend Version 8020 be implemented 
prior to, or shortly after, HHS's action. That commenter encouraged us 
to ensure that the proposed technical standards are supported, 
compliant, and not mandated for replacement for no less than 5 years 
after the implementation date.
    Multiple commenters recommended that HHS consult with standards 
development organizations (SDO) to ensure that the appropriate versions 
of the standards are finalized and that versioning is aligned. A 
commenter noted that using the versions proposed in the proposed rule 
could lead to operational and implementation costs and requested that 
HHS collaborate with early adopters of the proposed attachments 
standards. A commenter stated that the proposed Version 6020 of the 
X12N attachments standards will be problematic for attachment standard 
transactions because health care providers currently use Version 5010 
of the X12N standard, and Version 8020 is being utilized by X12. The 
commenter expressed the belief that HHS's proposal would create a 
scenario where the transaction standard floor is lower than the one X12 
will potentially recommend, and that is currently used for claims 
transaction processing. A commenter noted concern over the alignment 
between the proposed standards in the proposed rule and future HIPAA 
standards. The commenter encouraged HHS to ensure that future adoption 
of X12N standards is compatible with the proposed health care 
attachments standards outlined in the proposed rule. Multiple 
commenters recommended that HHS wait to adopt attachments transaction 
standards until the NCVHS makes a determination about recommending the 
next version of X12N standards. A commenter also stated that the NCVHS 
is currently evaluating requests from X12 on the adoption of Version 
8020 for the X12N 837 and X12N 835 payment/remittance advice standards.

[[Page 14366]]

    Response: We appreciate the commenters' recommendations and 
concerns regarding the adoption of specific versions of the X12N 275 
and X12N 277 standards for health care claims attachments. 
Specifically, we understand commenters' concerns regarding the 
potential for Version 6020 to become outdated, especially since X12 has 
published Version 8020 and the NCVHS may be considering it. However, 
the NCVHS has not recommended that any newer version of these standards 
be adopted under HIPAA, and under the HIPAA regulatory framework, HHS 
is limited to adopting standards that have completed the formal SDO 
process and have undergone appropriate evaluation and recommendation, 
including through the NCVHS. Therefore, we are finalizing the adoption 
of Version 6020 of the X12N 275 and X12N 277 standards, as they are 
currently the most recent versions that provide the necessary 
functionality to support the exchange of attachments in conjunction 
with claims and are currently the viable and legally supportable 
standards for the claims attachment transactions.
    We agree with commenters that it is important that the attachment 
standards and the broader suite of adopted HIPAA standards, such as the 
X12N 837 and 835, be aligned. We are committed to ongoing coordination 
with SDOs, such as X12, and with the NCVHS to ensure that any future 
updates to HIPAA standards, including consideration of Version 8020 or 
later, are harmonized across transaction types to reduce implementation 
burden and maintain interoperability. We also recognize the importance 
of maintaining stability in the adoption of new standards. The HIPAA 
statute allows for the periodic update of standards--indeed, as we 
discuss in section II.D.3., the HIPAA standards paradigm is premised on 
standards evolution over time--but we will strive to maintain 
reasonable implementation timelines and take commenters' feedback into 
account as we consider future rulemaking and versioning policies.
    Finally, as we extensively discuss in section III.A. of this final 
rule and reiterate elsewhere, we are not finalizing the proposed 
adoption of standards for prior authorization attachments at this time 
and, therefore, in this rule, are not adopting an updated version of 
the X12N 278 transaction standard.
a. Adoption of X12N Standards for Health Care Claims Attachments 
Transactions
(1) Adoption of Standards for Request From a Health Plan to a Health 
Care Provider for Attachment Information
(a) X12N 277--Health Care Claim Request for Additional Information 
(006020X313)
    In the proposed rule, we proposed to adopt the X12N 277--Health 
Care Claim Request for Additional Information (006020X313) as the 
standard a health plan must use to electronically request attachment 
information from a health care provider to support a health care claim 
in Sec.  162.2002(e)(1), and also proposed to incorporate the same by 
reference in Sec.  162.920 (87 FR 78447). We explained that the X12N 
277 standard for claims transactions contains two noteworthy fields: 
(1) the health plan assigned claim control number that is assigned by 
the health plan to link the attachment request with the original claim, 
enabling reassociation when the provider responds via the X12N 275 
transaction; and (2) the LOINC code set for HIPAA that is used to 
identify the specific type of attachment requested (87 FR 78447).
    Comment: Multiple commenters strongly supported HHS's proposed 
adoption of the X12N 277 standard for claims attachments, and a 
commenter recommended that we finalize this standard as proposed. 
Commenters noted that the current claims attachment process is complex 
and cumbersome and that adopting consistent electronic claims 
attachment standards would reduce administrative burden and associated 
costs. A commenter urged HHS to strongly enforce this new standard, if 
finalized. Multiple commenters discussed how health plans have 
implemented an electronic claims attachment standard outside the HIPAA 
context and achieved significant efficiencies in denials, appeals, and 
time to payment using clinical documents rather than granular data 
elements for claims processing. A commenter noted that this example of 
successful real-world implementation and return on investment 
strengthens the argument for immediate claims attachments standards 
adoption.
    Response: We thank these commenters for their support for our 
proposals to adopt a health care claims attachment standard.
    HHS administers HIPAA Administrative Simplification requirements 
related to the format and content of electronic administrative health 
care transactions for which we have adopted standards. Consistent with 
our approach of responding to complaints of non-compliance and 
conducting proactive compliance reviews, should we identify a HIPAA 
covered entity that fails to conduct, or fails to properly conduct, an 
adopted transaction standard, it may be subject to enforcement action.
    As discussed in the final action section, we are finalizing 
adoption of the X12N 277 transaction standard in Sec.  162.2002(d). The 
regulatory text has been reordered to group related transaction 
standards together for clarity and ease of reference; this reordering 
does not change the requirements for the use of the standard.
(2) Adoption of Standards for Transmission of Attachment Information 
From a Health Care Provider to a Health Plan: X12N 275--Additional 
Information To Support a Health Care Claim or Encounter (006020X314) 
and X12N 275--Additional Information To Support a Health Care Services 
Review (006020X316)
    We proposed to adopt, in Sec.  162.2002(d), the X12N 275--
Additional Information to Support a Health Care Claim or Encounter 
(006020X314) as the standard a health care provider must use to 
electronically transmit attachment information to a health plan to 
support a health care claims or equivalent encounter information 
transaction. We also proposed to incorporate the same by reference in 
Sec.  162.920.
    As discussed in the HIPAA Standards for Health Care Attachments 
proposed rule, the X12N 275 standard for claims transactions may be 
used with respect to both solicited and unsolicited attachment 
information (87 FR 78448). We noted in the proposed rule that the X12N 
275 standard for claims transactions does not itself contain claims 
attachment information (87 FR 78448). Rather, the standard serves as 
the electronic envelope for health care claims attachment information 
such that the attachment information (which is embedded in an HL7 
standard) is transported by the X12N 275. We describe in detail the 
specific HL7 standards for embedding attachment information in this 
section of the final rule.
    Additionally, we proposed to adopt, in Sec.  162.2002(c), the X12N 
275--Additional Information to Support a Health Care Services Review 
(006020X316) as the standard a health care provider must use to 
electronically transmit attachment information for electronic prior 
authorization

[[Page 14367]]

transactions. We also proposed to incorporate the same by reference in 
Sec.  162.920. We are not adopting that standard in this final rule as 
it only pertains to electronic prior authorization transactions. We 
clarify that in this final rule, we are only adopting the X12N 275--
Additional Information to Support a Health Care Claim or Encounter 
(006020X314) standard for health care claims attachments.
    The X12N 277 transaction set is used for claim status inquiries and 
responses. When a health care provider submits a claim and the payer 
needs additional information to continue the review or processing of 
that claim, it may send the provider a request through a X12N 277--
Health Care Claim Request for Additional Information transaction, and 
the health care provider may use the X12N 275--Additional Information 
to Support a Health Care Claim or Encounter to transmit the requested 
information back to the payer. For example, with a surgery for which 
there is no HCPCS code, for solicited attachment information, the 
health plan would request attachment information using the X12N 277 
standard for claims transactions, and the health care provider would 
use the X12N 275 standard for claims transactions to respond with the 
operative note. In a scenario with unsolicited attachment information, 
the health care provider would transmit the X12N 275 standard for 
claims transactions to enable the health plan to make a decision about 
the claim without additional requests for information.
    Comment: Multiple commenters supported the adoption of the X12N 275 
standard for health care claims transactions. Commenters stated that 
the present lack of attachments standards under HIPAA burdens the 
health care industry and noted that evidence from voluntary X12N 275 
standard implementations has demonstrated the technical success of the 
transactions and cost savings. A commenter stated that, due to the X12N 
standards being foundational and widely implemented across health care 
providers, health plans, and health IT vendors, they believe it is 
appropriate to adopt the X12N 275 standard as the basis for exchange to 
support adoption at scale. A commenter recommended that HHS mandate a 
version of the X12N 275 standard that is consistent with HIPAA 
requirements at publication of the final rule. Another commenter 
expressed support for solicited and unsolicited claims attachment 
standards and noted that using the X12N 275 standard concurrently with 
a claims transaction will promote efficiency and decrease costs for 
providers and health plans. A commenter pointed out that Version 6020 
of the X12N 275 standard includes the Binary Data Segment (BDS), which 
was not part of Version 5010, and is necessary for transmitting 
properly encoded clinical data.
    Response: We thank the commenters for their feedback and support. 
We agree that the absence of adopted HIPAA attachment standards has 
contributed to variability and inefficiencies in documentation exchange 
processes across the health care industry. We appreciate commenters 
highlighting the value of using the X12N 275 standard for health care 
claims and encounters, including its technical success in voluntary 
implementations, alignment with widely adopted foundational X12N 
standards, and capacity to support health care provider, health plan, 
and vendor interoperability. We also agree that adopting a consistent 
standard for solicited and unsolicited claims attachments can reduce 
administrative burden and promote operational efficiency.
    We acknowledge the specific support for Version 6020 of the X12N 
275 standard and its enhancements over prior versions, including the 
BDS that supports the secure and structured transmission of clinical 
data in attachment transactions. Accordingly, in this final rule, we 
are adopting Version 6020 of the X12N 275 standard for use in the 
health care claims attachments transaction, as well as Version 6020 of 
the X12N 277 standard. We believe this establishes a clear, standards-
based foundation for exchanging attachments that will enable greater 
automation, improve data integrity, and reduce costs across the health 
care system.
    We appreciate commenters' recognition of the need for consistency 
and predictability in the standards adopted under HIPAA and will 
continue to engage with parties in the health care industry and SDOs to 
ensure that future standards development and updates are responsive to 
industry needs and remain aligned with the HIPAA regulatory framework.
    Comment: A commenter stated the X12N 275 standard for health care 
claims and encounters will not work with unstructured documentation. 
Another commenter recommended that HHS permit trading partners to agree 
upon other documentation, not covered by the HL7 C-CDA, that would be 
allowed to be transported via the X12N 275 standard.
    Response: We further evaluated the commenter's assertion that the 
X12N 275 standard for claims transactions would not work with 
unstructured documentation and determined the assertion is incorrect, 
having confirmed that the X12N 275 standard for claims transactions 
does support the submission of unstructured documentation. The versions 
that we are adopting in this final rule include the BDS, which, in the 
HL7 standard, is used to carry attachments, such as documents or 
images. Moreover, the C-CDA Release 2.1 supports structured and 
unstructured templates. Therefore, we believe that the standards we are 
adopting in this final rule are sufficient for broad industry-wide use.
    Regarding the comment recommending that we permit trading partners 
to agree that documentation not covered by the HL7 C-CDA be allowed to 
be transported via the X12N 275 standard for claims transactions, the 
types of documentation supported by the HL7 C-CDA broadly cover those 
that may be requested for the claims payment process. However, we 
encourage covered entities to negotiate the types of documentation 
required for implementing the transaction standard during the 
development of their trading partner agreements.
    Comment: A commenter noted that health IT vendors will have to 
engage in new development work should the proposed X12N 275 standard 
for claims attachment transactions be finalized as proposed, since such 
entities have not previously developed those transaction standards.
    Response: As discussed previously, we acknowledge that covered 
entities, or their vendors, will incur a number of one-time costs to 
implement the new HIPAA transactions. However, over time, we believe 
the resultant automation will ultimately benefit the industry by 
reducing burden and costs. We account for this implementation burden in 
our impact analysis in section VI. of this final rule.
    Comment: Multiple commenters expressed that a definition for 
baseline structured data is needed to achieve administrative burden 
relief. They also emphasized that it is important that the X12N 837 
claim and encounter standard be supported by the X12N 275 standard for 
claims transactions for additional information at the time of a prior 
authorization request, initial claim submission, and for claims in paid 
or denied status.
    Response: We do not believe that a definition for baseline 
structured data is needed because the HL7 C-CDA Release 2.1 broadly 
covers structured and unstructured document types that may be 
transmitted under the X12N 275 standard for claims attachment

[[Page 14368]]

transactions. We encourage interested parties to engage with SDOs and 
industry collaboratives to identify and refine the consensus around 
structured data elements. We also encourage covered entities to 
negotiate the types of documentation required for implementing the 
transaction standard during the development of their trading partner 
agreements.
    Final Action: After consideration of the public comments we 
received, and after consultation with the SSOs, we are finalizing, with 
modification, our proposal regarding the adoption of certain X12N 
standards for requesting and transmitting attachment information.
    In Sec.  162.2002(c), we are adopting the X12N 275--Additional 
Information to Support a Health Care Claim or Encounter (006020X314) as 
the standard a health care provider must use to electronically transmit 
attachment information to a health plan to support a health care claim 
or equivalent encounter information transaction. We are also 
incorporating this standard by reference in Sec.  162.920.
    In Sec.  162.2002(d), we are adopting the X12N 277--Health Care 
Claim Request for Additional Information (006020X313) as the standard a 
health plan must use to electronically request attachment information 
from a health care provider to support a health care claim. We are also 
incorporating this standard by reference in Sec.  162.920.

E. Adoption of HL7 IGs for Health Care Claims Attachment Information

    The HL7 CDA standard is the only currently available SSO-created, 
NCVHS-recommended implementation specification in the United States 
designed to support the HIPAA transactions. Other standards for the 
exchange of clinical information are being developed and piloted. 
However, due in part to its readiness, we stated in the proposed rule 
that we believe the HL7 CDA IG set is the most appropriate standard for 
adoption at this time (87 FR 78448).
    We proposed to adopt the following three HL7 IGs as HIPAA standards 
for the attachment information included in health care attachments 
transactions:
     HL7 IG for CDA Release 2: C-CDA Templates for Clinical 
Notes (US Realm) Draft Standard for Trial Use Release 2.1, Volume One--
Introductory Material, June 2019 with Errata (HL7 C-CDA IG Volume One).
     HL7 IG for CDA Release 2: C-CDA Templates for Clinical 
Notes (US Realm) Draft Standard for Trial Use Release 2.1, Volume Two--
Templates and Supporting Material, June 2019 with Errata (HL7 C-CDA IG 
Volume Two).
     HL7 CDA Release 2 Attachment IG: Exchange of C-CDA Based 
Documents, Release 1, March 2017 (HL7 Attachments IG).
    We refer readers to the detailed discussion in the proposed rule on 
the purpose and functionality of each IG and how they interact with 
each other (87 FR 78448).
    These IGs provide specifications for creating and transmitting both 
structured and unstructured health care attachment documents. 
Structured documents are machine-readable with standardized sections 
and codes, while unstructured documents (for example, scanned images, 
video, patient logs, etc.) have metadata (that is, information that 
describes, explains, or gives context to other data) but no internal 
tagging. The HL7 Attachments IG also defines criteria for creating new 
templates when none exist.
    In the HIPAA Standards for Health Care Attachments proposed rule, 
we proposed to adopt the March 2017 iteration of the HL7 Attachments 
IG. The SDO engaged in its regular maintenance process with respect to 
that IG, and, in March 2022, published the Release 2 iteration of it. 
Commenters on the proposed rule encouraged us to adopt the March 2022 
iteration, as opposed to the March 2017 iteration that we had proposed 
to adopt.
    We carefully examined the history of changes to the HL7 Attachments 
IG between March 2017 and March 2022 and determined that the cumulative 
changes reflected in the March 2022 iteration of the IG constitute 
``maintenance updates'' because, rather than adding new content, the 
updates address errata in the existing IG content. Maintenance refers 
to ``activities necessary to support the use of a standard adopted by 
the Secretary, including technical corrections to an implementation 
specification, and enhancements or expansion of a code set.'' \27\ 
Maintenance updates to standards are non-substantive in nature, unlike 
modifications to standards which require rulemaking to be adopted by 
the Secretary.
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    \27\ See 42 CFR 162.103.
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    We also consulted the DSMOs, which apprised us that the maintenance 
updates reflected in the March 2022 iteration of the HL7 Attachments IG 
better facilitate implementation of Version 6020 of the X12N 275 and 
X12N 277 standards for claims attachments adopted by the Secretary in 
this final rule. Our own in-depth evaluation along with our 
consultations with the DSMOs persuade us that we can confidently 
conclude that adopting the newer March 2022 iteration of the HL7 
Attachments IG would be functionally equivalent to adopting the March 
2017 iteration of the HL7 Attachments IG with errata.
    Having established that the March 2022 iteration is functionally 
equivalent to the proposed March 2017 HL7 Attachments IG with 
maintenance updates, and to avoid industry confusion with respect to 
which IG iteration should be used, in this final rule we are adopting 
the March 2022 iteration of the HL7 Attachments IG which is Release 2.
    Comment: Multiple commenters expressed support for the adoption of 
the proposed HL7 IGs for the exchange of claims attachments 
information. A commenter stated that the HL7 C-CDA is widely 
implemented and has demonstrated its value through the flexibility it 
provides in delivering solicited and unsolicited information in various 
formats. Another commenter stated that if HHS proceeds with the 
implementation of the claims attachments standards for payment 
purposes, they support proceeding with the HL7 C-CDA standard for now.
    Response: We thank commenters for their feedback and support of our 
proposal.
    Comment: Multiple commenters expressed concern regarding HL7's 
indication that it will no longer make updates to the HL7 CDA and C-CDA 
standard, in favor of moving towards FHIR solutions, and recommended 
that HHS work with HL7 to continue maintaining the HL7 C-CDA standard 
or develop a plan for a FHIR-based solution. A commenter urged HHS to 
ensure that HL7 will continue to support and develop guides based on 
the HL7 CDA standard as needed.
    Response: HL7 is required, as an SSO, to continue to maintain any 
IGs that are adopted by the Secretary as HIPAA standards. Like all 
SSOs, HL7 holds weekly workgroup meetings and quarterly membership 
meetings to ensure that adopted standards meet the needs of HIPAA 
covered entities and, should a modification be needed to a standard, 
the workgroup would undertake its process to update it. SSOs, SDOs, or 
DSMOs maintain their standards in accordance with ANSI requirements and 
their own ANSI-approved policies; maintenance is an ANSI requirement 
and is embedded in each SSO's processes, so it is not governed by 
expectations or assumptions.
    We did include a request for comment in the HIPAA Standards for 
Health Care Attachments proposed rule (87 FR

[[Page 14369]]

78444) on other standards to consider for prior authorization 
transactions, to which we received numerous comments advocating for the 
FHIR standard. We will consider these comments in our future planning 
with respect to the health care transaction standards adopted under 
HIPAA Administrative Simplification.
    Comment: A commenter expressed support for an approach that enables 
advancing standards-based attachment content. Additionally, since it 
was not referenced in the proposed rule, multiple commenters sought 
clarification as to whether the HL7 CDA[supreg] R2 IG: C-CDA Templates 
for Clinical Notes STU Companion Guide Release 3 (US Realm) Standard 
for Trial Use, May 2022 (HL7 C-CDA Companion Guide) may be used under 
the proposed health care attachments template recognition approach.
    Multiple commenters recommended that HHS consider adopting the HL7 
C-CDA Companion Guide. The commenters noted the HL7 C-CDA Companion 
Guide provides additional templates and best practices useful for 
attachments transactions and guidance to document creators to ensure 
higher levels of consistency and quality.
    A commenter noted that the HL7 C-CDA Companion Guide is the primary 
guide to specify templates for use in the Office of the National 
Coordinator for Health Information Technology's (ONC) \28\ 
Certification Program (ONC Health IT Certification Program) and sought 
confirmation of its belief that it represents templates applicable to 
attachments without a separate template needing to be defined. The 
commenter stated additional rulemaking would be needed following the 
publication of the next version of the HL7 C-CDA Companion Guide if HHS 
decided to reference this IG in the final rule. The commenter expressed 
concern that this would hinder industry's ability to use the HL7 C-CDA 
Companion Guide. Commenters also encouraged HHS to make the HL7 C-CDA 
Companion Guide eligible for use without specifically being referenced 
under the proposed health care attachments template recognition 
approach so that future updates to templates used within the IG could 
be used immediately upon publication through the accepted process.
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    \28\ On July 25, 2024, HHS announced a reorganization to 
streamline and bolster technology, cybersecurity, data, and AI 
strategy and policy functions which had historically been 
distributed across HHS. As part of the reorganization, ONC has been 
renamed the Assistant Secretary for Technology Policy and Office of 
the National Coordinator for Health Information Technology (ASTP/
ONC) and has assumed oversight over technology. For more information 
on this reorganization refer to the press release available at: 
https://www.hhs.gov/about/news/2024/07/25/hhs-reorganizes-technology-cybersecurity-data-artificial-intelligence-strategy-policy-functions.html.
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    Response: We are adopting the C-CDA implementation specifications 
because they are already implemented and widely used in EHR systems. 
The HL7 C-CDA Companion Guide, which is a collection of IGs that 
provides standardized templates for structuring C-CDA documents, is a 
set of IGs defined by HL7 as a ``library of C-CDA templates,'' and 
their functionality allows that any templates created with them are 
compliant with the HL7 C-CDA standard. These templates essentially 
serve as blueprints for how specific medical information should be 
organized and presented when exchanging patient data between systems 
using the C-CDA standard.\29\ If compatible with the HL7 C-CDA release 
adopted, these templates are acceptable for use once an associated 
LOINC code is available.
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    \29\ Health Level Seven International. (HL7). Understanding C-
CDA and the C-CDA Companion Guide. Retrieved from https://build.fhir.org/ig/HL7/CDA-ccda-2.1-sd/understanding_c-cda_and_the_c-cda_companion_guide.html.
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    Comment: A commenter expressed support for a consistent format that 
would eliminate manual processes to send and receive data and allow for 
information to be automatically recorded into a patient's record, 
stating that this change would eliminate manual processes. The 
commenter also noted that health IT vendors are currently only required 
to support three HL7 C-CDA templates and stated that requiring health 
IT vendors to support all template types would require significant 
development effort while, concurrently, numerous other regulatory 
requirements go into effect. The commenter noted that integrating EHRs 
and revenue cycle products to support CDA generation would require 
significant development.
    Response: We understand that covered entities, or their vendors, 
will incur a number of one-time costs to implement the new and modified 
HIPAA transactions, for which we account in the RIA (section VI. of 
this final rule). Health IT vendors are not covered entities and 
therefore are not directly required to comply with the requirements. 
While HIPAA covered entities must comply with the requirements of this 
final rule, they are not required to possess technology that implements 
every template in the C-CDA; rather the attachments they transmit must 
be in accordance with the standard. We are adopting both the HL7 CDA 
and X12N standards for health care claims attachments transactions. Our 
goal is to automate health care transactions as much as possible, which 
will ultimately decrease costs.
    Comment: A commenter questioned the use of HL7 C-CDA templates to 
support prior authorization requests and stated that no health plans 
have mapped their clinical criteria to HL7 C-CDA templates to ensure 
all the data needed to make the prior authorization decisions are in 
those templates. The commenter stated that this lack of successful 
results from real-world testing is a critical issue and that payers use 
a data-element approach for prior authorizations rather than clinical 
documents. A commenter stated that the C-CDA unstructured document does 
not fully support the ability to carry a FHIR bundle, and that use of 
the C-CDA unstructured document would interfere with the IGs referenced 
in the CMS Interoperability and Prior Authorization proposed rule that 
was proposed at the time these comments were submitted. Specifically, 
the commenter referenced the HL7[supreg] FHIR[supreg] Da Vinci Coverage 
Requirements Discovery (CRD) and Document Templates and Rules (DTR) 
IGs, which support the use of questionnaire and responses, as part of 
data collection in the prior authorization process. The commenter noted 
it is important that real-time responses should be considered as part 
of the prior authorization workflow and recommended that HHS ensure 
that any requirements for the adoption of ePA APIs by CMS-denominated 
``impacted payers'' be harmonized with current HIPAA prior 
authorization transaction standards and CMS's Interoperability and 
Prior Authorization rule, which has since been finalized.
    Response: We appreciate the comments submitted in response to our 
proposal to adopt a prior authorization health care attachments 
transaction standard. As articulated in section III.A. of this final 
rule, and noted repeatedly elsewhere, we are not finalizing our 
proposal to adopt prior authorization with the health care claims 
attachments transaction standard.
    Comment: A commenter recommended that C-CDA structured information 
be allowed and encouraged where appropriate, but not required. The 
commenter also stated that unstructured documents can, but should not 
be required to, utilize the Unstructured Document CDA template.
    Response: Covered entities may use any adopted documentation format 
that is supported by, and compatible with, the standards adopted in 
this rule. The IGs we are adopting also support

[[Page 14370]]

unstructured data documents where the HL7 C-CDA structured documents 
are unable to support the document or do not exist. We note that health 
plans must specify the types of attachment information that will be 
necessary to support a claim and encourage health plans conducting 
electronic transactions with health care providers to accept 
electronically both structured and unstructured C-CDA documents.
    Comment: Multiple commenters expressed that the proposed version of 
the HL7 Attachments IG is no longer current, noting that an updated 
version of the HL7 Attachments IG was published in March 2022.\30\ A 
commenter recommended that HHS adopt the ``most recent version'' of all 
the proposed HL7 IGs in the final rule.
---------------------------------------------------------------------------

    \30\ Health Level Seven International (HL7). (2022, March 8). 
HL7 CDA R2 Attachment Implementation Guide: Exchange of C-CDA Based 
Documents, Release 2--U.S. Realm. Retrieved from https://www.hl7.org/implement/standards/product_brief.cfm?product_id=464.
---------------------------------------------------------------------------

    Response: We appreciate these comments and thank commenters for 
sharing these important considerations, which we interpret to mean that 
HHS should adopt the most recent iteration of the HL7 Attachments IG 
that was proposed, including its maintenance updates. As we explain 
earlier, based on the commenters' suggestions, we reviewed the March 
2022 iteration of the proposed HL7 Attachments IG and consulted with 
standards maintenance organizations and found the March 2022 iteration 
of the HL7 Attachments IG is functionally equivalent to adopting the 
March 2017 iteration of the HL7 Attachments IG with errata. Therefore, 
in this final rule, we are adopting Release 2 of the HL7 Attachments 
IG, published in March 2022.
    Comment: A commenter recommended that HHS work with the NCVHS to 
develop alternative approaches to meeting the HIPAA EDI requirements 
that represent a more contemporary basis of interoperability. Multiple 
commenters stated that the proposal would leave limited ability to 
improve on the current state of automated support to produce the 
relevant data to populate the requested document type with the minimum 
necessary information without substantive user involvement. A commenter 
further explained that the proposed rule would require the use of C-
CDA-based attachments in accordance with the HL7 CDA[supreg] R2 
Attachment IG: Exchange of C-CDA Based Documents, Release 1--US Realm 
(STU) and would cover approximately 106 recognized document types. 
Multiple commenters pointed out that thirteen document types in C-CDA 
R2.1, of which three are recognized in the ONC Health IT Certification 
Program and one is recognized in CMS's programs, have defined C-CDA 
templates, but no clear implementation guidance is provided for all the 
other 90+ document types that are referenced. Commenters pointed out 
that this means some would not have a clear C-CDA document to consider, 
for example, a physician letter or a patient consent for treatment in 
an unstructured C-CDA document, while others could be structured in C-
CDA format, but no agreed upon document templates exist.
    Response: We appreciate these comments and thank commenters for 
sharing these implementation considerations. The C-CDA standard is 
being adopted because it provides a widely recognized, structured 
format that supports interoperability and can accommodate a variety of 
clinical documents. The LOINC code system allows discrete 
identification of attachment types, including both structured and 
unstructured documents, and provides modifiers for templates and time 
windows where applicable. We believe that the C-CDA standard we are 
adopting broadly covers the types of documents that would be requested 
for health care claims. Though the standard we are adopting might not 
address all document types, it balances the need for standardization 
and efficiency with practical flexibility for health care providers 
while allowing the system to evolve as new document templates and 
business needs arise.
    The document types in the HL7 Attachments IG have discrete data 
elements that allow HIPAA covered entities to exchange clinical 
information as both an unstructured and structured document. Should 
covered entities have future business needs that give rise to 
additional document types, these could be exchanged as unstructured 
documents by obtaining a LOINC code to identify the attachment type.
    Comment: Multiple commenters recommended that HHS reconsider 
adopting the standard for claims attachments transactions, given the 
substantial guidance still needed to enable supporting a substantially 
less burdensome documents-based approach. One commenter stated that in 
order to support a consistent exchange through FHIR-based or X12-based 
transactions, attachment approaches between the CDex guide and the HL7 
Attachments IG need to be aligned.
    Response: We appreciate this information and encourage the industry 
to submit specific requests for changes and enhancements to the 
transaction standards to the SDO responsible for maintaining the 
standard.
    Comment: Multiple commenters expressed support for the use of the 
HL7 CDA standard, HL7 C-CDA standard, and HL7 IGs for health care 
attachment transactions.
    Response: We thank the commenters for their feedback and support of 
our proposal.
    Comment: A commenter recommended that HHS name a specific version 
of the HL7 IGs as a ``floor'' and create a sub-regulatory advancement 
process. The commenter stated that without a requirement to use 
specific IGs, the industry will not achieve the level of 
interoperability necessary to support data exchange. The commenter 
recommended that HHS establish a process, such as the ONC Standards 
Version Advancement Process (SVAP), to allow technology to evolve 
through industry testing while also allowing the industry to provide 
public comment.
    Response: We thank the commenters for their feedback. We note that 
section 1174(b)(2)(B)(i) of the Act provides authority permitting the 
routine maintenance, testing, enhancement, and expansion of code sets 
outside of the rulemaking process. We will further explore regulatory 
flexibilities with respect to modifications to adopted IGs. With 
respect to requiring that organizations adopt new and updated code 
sets, we note that such changes are generally considered maintenance 
updates, and the Secretary previously adopted LOINC as a code set for 
use with HIPAA health care transaction standards. Organizations can 
incorporate maintenance updates to a given IG, including its LOINC 
codes, without the need for the Secretary to engage in additional 
rulemaking.
    Comment: A commenter recommended that HHS modify the rule to state 
that the HL7 C-CDA standard be used for all documents covered by the 
HL7 C-CDA, but not limit health insurance providers, hospitals, and 
clinicians to solely use HL7 C-CDA permitted documents.
    Response: We reiterate that covered entities may use any adopted 
documentation format that is supported by, and compatible with, the 
standards adopted in this rule. Additionally, we note that the IGs we 
are adopting also support unstructured data documents where the HL7 C-
CDA structured documents are unable to support the document or do not 
exist.
    Comment: A commenter offered that mandating the HL7 IG standards 
for HIPAA transactions is an important step forward, but expressed 
concern that these standards have not yet been tested

[[Page 14371]]

for suitability to the dental industry. The commenter provided specific 
examples relating to dental claims, noting that only one dental health 
IT module is certified under the ONC Health IT Certification Program, 
meaning that the majority of dental EHR systems cannot produce HL7 C-
CDA. The commenter noted that dental claims require images as 
supporting documentation in a variety of formats (for example, BMP, 
JPG/JPEG, TIFF/TIF, PNG, PDF, TXT, DOC/DOCX, DICOM, GIF), and 
recommended that HHS allow the use of these file formats instead of 
mandating the sole use of HL7 C-CDA to account for specialties that may 
rely on unstructured data exchanges, specifically noting concerns in 
cases where unstructured data such as MRIs and X-rays are needed. A 
commenter noted that the dental industry has worked with HL7 to develop 
two CDA R2 attachment standards and IGs tailored to the needs of the 
dental industry. These two IGs, which the commenter suggested should be 
considered for adoption, are: (1) the HL7 CDA[supreg] R2 IG: 
Orthodontic Attachment, Release 1--US Realm which aims to provide a 
CDA-based set of templates that can be used by a dental provider to a 
payer for claims; and (2) the HL7 CDA[supreg] R2 IG: Exchange of C-CDA 
Based Documents; Periodontal Attachment, Release 1--US Realm which is 
used to exchange dental clinical data.
    Response: We agree that it is important that HIPAA-adopted 
standards support the needs of all health care types, including the 
needs of the dental industry. HL7 has developed two dental C-CDA 
standards, but, because the NCVHS has not yet recommended them for 
adoption and because we did not propose them in the HIPAA Standards for 
Health Care Attachments proposed rule, we cannot adopt them in this 
final rule. Should the NCVHS make such a recommendation to the 
Secretary, we may consider adopting these dental standards in future 
rulemaking. Upon publication of this final rule, we will consider 
outreach strategies and industry-wide policies and implementation 
issues, along with sector-specific approaches that may, for example, 
involve collaborating with multiple interested parties to conduct 
dental-specific outreach and education.
    Final Action: After consideration of the public comments we 
received, we are finalizing our proposals to adopt the following HL7 
IGs as HIPAA standards for the attachment information included in 
health care claims attachments transactions in Sec.  162.2002(a) and 
(b):
     HL7 CDA Release 2 Attachment IG: Exchange of C-CDA Based 
Documents, Release 2, March 2022 (HL7 Attachments IG).
     HL7 Implementation Guide for CDA Release 2: Consolidated 
CDA Templates for Clinical Notes (US Realm) Draft Standard for Trial 
Use Release 2.1, Volume One--Introductory Material, June 2019 with 
Errata (HL7 C-CDA IG Volume One).
     HL7 Implementation Guide for CDA Release 2: Consolidated 
CDA Templates for Clinical Notes (US Realm) Draft Standard for Trial 
Use Release 2.1, Volume Two--Templates and Supporting Material, June 
2019 with Errata (HL7 C-CDA IG Volume Two).

F. LOINC for HIPAA Attachments

    We stated in the HIPAA Standards for Health Care Attachments 
proposed rule (87 FR 78445) that health plans and health care providers 
must have a clear and unambiguous way to specify attachment information 
(for example, a discharge summary, surgical operation note, or 
cardiovascular disease consult note) to be transmitted or requested in 
a health care attachments transaction.
    As we stated, the LOINC code set was developed for the following 
three principal purposes:
     To identify the specific kind of information that a health 
plan electronically requests of a health care provider and a health 
care provider electronically transmits to a health plan (for example, a 
discharge summary or a diagnostic imaging report).
     To specify certain optional modifier variables for 
attachment information (for example, a time period for which the 
attachment information is requested).
     For structured attachment information, to identify 
specific HL7 IG: LOINC Document Ontology document templates.
    With respect to these three purposes, we discussed that the HL7 
Attachments IG contains specific instructions for how to utilize the 
LOINC code set for HIPAA Attachments (87 FR 78445).
    In the proposed rule, we included an overview on tools available 
from Regenstrief to support utilization of the LOINC for HIPAA 
Attachments (87 FR 78445).
    Comment: Multiple commenters supported the use of the LOINC for 
HIPAA Attachments, with some stating that LOINC enables health plans to 
request documents, which will reduce processing delays caused by 
current inefficient document request processes. A commenter stated that 
the use of LOINC for HIPAA Attachments is logical, as Regenstrief has 
online tools for easier searches, including a LOINC database that 
effectively creates an attachments knowledge base with a twice-yearly 
release cycle. Commenters noted that they support use of LOINC for 
HIPAA Attachments to identify the specific kind of information 
communicated in an attachment request and response. Another commenter 
stated that the use of LOINC for HIPAA Attachments will help payer and 
provider relationships by establishing more rules regarding the use of 
standardized codes and defining specific documentation and terms.
    Response: We thank the commenters for their support.
    Comment: Multiple commenters expressed support for adopting 
flexible templates to enable continuous advances in standards-based 
attachment content. A commenter expressed support for the process 
discussed in the proposal (87 FR 78449) that accounts for the 
development of new templates not currently specified in the HL7 C-CDA 
IG Volume One, HL7 C-CDA IG Volume Two, or HL7 Attachments IG. The 
commenter noted that the C-CDA Companion Guide maintains templates and 
that the process discussed would afford flexibility for newly defined 
or updated templates to expand standards-based coverage of the 
currently permissible LOINC codes and any newly established LOINC 
codes. Multiple commenters recommended that HHS establish clear 
guidelines for when new codes can be requested and how long systems 
will have to incorporate new LOINC documents into their systems. A 
commenter recommended that HHS name a specific version of the LOINC for 
HIPAA Attachments and specify that organizations must adopt updated 
codes as they are issued.
    Response: We thank commenters for their feedback, and we agree that 
our approach to adopting flexible standards will enable continuous 
advances in standards-based attachment content. We also acknowledge the 
commenters' concerns about establishing clear guidelines for when new 
codes can be requested and the timeframe by which LOINC documents are 
incorporated into systems. As mentioned earlier, the claims attachment 
transaction standards we are adopting incorporate numerous 
implementation specifications containing specific instructions for how 
to utilize LOINC for HIPAA Attachments to identify the specific 
information that a health plan electronically requests of a health care 
provider, including when a health plan can request such information and 
the time period a request covers. Regenstrief maintains a regular 
update process and

[[Page 14372]]

covered entities would be expected to utilize the LOINC for HIPAA 
Attachments codes that are valid at the time the transaction is 
initiated, as specified by the relevant implementation specification as 
discussed previously in section II.C.3. of this final rule. Commenters 
strongly support the adoption of the current version of the HL7 C-CDA 
standard in this final rule, and we are adopting the March 2022 
iteration of the HL7 Attachments IG, as discussed previously.
    Comment: Multiple commenters stated that providers and payers will 
require education on correct mapping of fields to use the LOINC code 
set. Multiple commenters encouraged HHS to ensure that multiple LOINC 
code sets are supported, and a commenter suggested that HHS require 
payers to offer providers a list to inform them which documents need to 
be attached.
    Response: We agree with the commenters' points about the utility of 
education around implementing and using LOINC codes. As discussed in 
section VI. of this final rule, we anticipate that training will be 
needed once this rule is finalized. Health plans may choose to develop 
and create educational materials that contain lists of attachment 
documents and their associated LOINC codes as an educational tool for 
health care providers and systems designers.
    Comment: A commenter stated that multiple LOINC codes may be needed 
for a single prior authorization transaction and recommended that HHS 
ensure that multiple LOINC codes will be supported and that an 
additional LOINC code validates that the list of required documents 
from the payer is complete. The commenter stated that delays in prior 
authorization decisions occur when payers change the nature and type of 
documentation for a prior authorization request.
    Response: We thank commenters for sharing these considerations, 
but, as we discuss in section III.A. of this final rule, we are not 
finalizing our prior authorization proposal. Therefore, we need not 
address LOINC code issues specific to that use case.

G. Electronic Signatures

    Section 1173(e)(1) of the Act provides that the Secretary, in 
coordination with the Secretary of Commerce, must adopt standards 
specifying procedures for the electronic transmission and 
authentication of signatures for HIPAA transactions. In the HIPAA 
Standards for Health Care Attachments proposed rule, we included a 
discussion of prior rulemaking related to electronic signatures (87 FR 
78449), to which we refer readers for details. In the proposed rule, we 
recognized that electronic signatures would require certain 
implementation features, including message integrity, nonrepudiation, 
and user authentication, and proposed that the standard for electronic 
signatures would be digital signatures--electronic stamps that contain 
information about both the user creating the signature and the document 
being signed--as the only technically mature means available that could 
provide for nonrepudiation in an open network environment. We also 
provided an overview of our understanding of the use of signatures in 
health care and reasoning for our proposal regarding electronic 
signatures (87 FR 78449).
    As such, in the HIPAA Standards for Health Care Attachments 
proposed rule, we proposed to define the term ``electronic signature'' 
and to adopt the HL7 Implementation Guide for CDA Release 2: Digital 
Signatures and Delegation of Rights, Release 1 (Digital Signatures 
Guide) (87 FR 78450). The HIPAA Standards for Health Care Attachments 
proposed rule (87 FR 78438) that appeared in the December 21, 2022, 
Federal Register contained the full definition of ``electronic 
signature'' and detailed information about the Digital Signatures Guide 
so that the public could provide informed comments. However, we 
acknowledge that a correction notice was published on March 17, 2023 
(88 FR 16392) to provide the regulation text that inadvertently was not 
included in the proposed rule, while subsequently, on March 24, 2023, 
we published a notice (88 FR 17780) extending by 30 days the public 
comment period to allow an additional opportunity for the public to 
provide comment despite the fact there were no changes to the proposed 
definition of electronic signature or the proposed Digital Signatures 
Guide, and the proposed regulation text contained in the correction 
notice reflected the same proposed definition and standard. In this 
final rule, the definition of electronic signature, the Digital 
Signatures Guide, and the regulation text have not changed from these 
previous publications. We discuss this proposal and summarize and 
discuss the comments we received on it, in this section.
1. Definition of Electronic Signature
    In the HIPAA Standards for Health Care Attachments proposed rule 
(87 FR 78449), we stated that an electronic signature can be any of 
several types of marks or data that indicate a signatory's intent to 
sign and included examples of electronic signatures.
    We proposed to define the term ``electronic signature'' for 
purposes of the HIPAA Standards for Health Care Attachments proposed 
rule as broadly as possible to ensure that it would meet covered 
entities' current needs and could also encompass future electronic 
signature technologies. The proposed text in Sec.  162.103 read: 
``Electronic signature means an electronic sound, symbol, or process, 
attached to, or logically associated with attachment information and 
executed by a person with the intent to sign the attachment 
information.'' In this final rule we finalize the proposed definition 
of ``electronic signature'' in Sec.  162.103 and the adoption of the 
Digital Signatures Guide in Sec.  162.2002(e), with requirements for 
the use of electronic signatures limited to attachment information 
transmitted electronically in health care claims attachments 
transactions, in accord with the attachments transactions we are 
finalizing.
    Comment: Multiple commenters expressed support for the proposed 
electronic signature definition and the proposed implementation 
requirements for the use of electronic signatures for health care 
attachments, offering that electronic signatures are a modern 
technology that will reduce burden and allow clinicians to focus on 
patient care rather than paperwork. A commenter expressed support for 
HHS's approach to electronic signatures that would allow health 
insurers and clinicians to maintain their existing practices regarding 
the use of electronic signatures, as there is a wide variety of 
electronic signature requirements and business practices across 
organizations. However, this commenter indicated that because the 
regulation text for the proposed definition and Digital Signatures 
Guide had not been provided in the December 21, 2022 proposed rule, the 
Secretary should publish an interim final rule (IFR) with this 
information and provide an additional opportunity to comment. 
Additionally, multiple commenters expressed support for HHS limiting 
the electronic signature requirements to just the adopted electronic 
standard transactions with no requirements on how a provider will 
implement a signing process for a health care attachment. Another 
commenter expressed support for HHS not establishing requirements for 
when, or by whom, a document should be signed. A commenter expressed 
support for flexibility, allowing future technologies, like electronic 
signatures, which could be incorporated as EHRs adopt them.

[[Page 14373]]

    Response: We thank commenters for their feedback and support for 
our proposals. As stated previously, a correction notice was published 
on March 17, 2023 (88 FR 16392) to provide the regulation text that 
inadvertently was not included in the proposed rule. We also published 
a notice on March 24, 2023 (88 FR 17780) extending the public comment 
period by 30 days despite the fact that the correction notice contained 
no changes to the proposed definition of electronic signature or the 
proposed adoption of the Digital Signatures Guide, and the proposed 
regulation text contained in the correction notice reflected the same 
language for the proposed definition and standard that was included in 
the proposed rule. In this final rule, these provisions remain 
unchanged. Therefore, we believe further rulemaking to obtain 
additional public comment on the definition of electronic signature, 
the Digital Signatures Guide, and the regulation text is unnecessary.
    Comment: A commenter disagreed with the proposed use of non-
computable electronic signatures, such as an image of a signature, 
stating this would not provide identity or support authentication and 
assertions. Another commenter requested that HHS clarify that health 
plans cannot require original digital signatures for unstructured 
documents used in health care attachments. A commenter recommended that 
HHS should clearly specify ``signature'' versus a ``sound, symbol or 
process.'' The commenter stated that the current wording could create 
confusion and complicate the intent of implementing a standardized 
process. Additionally, the commenter recommended defining an electronic 
signature as a digital copy of an original signature, attached to or 
logically associated with attachment information, and executed by a 
person with the intent to sign the attachment information.
    Response: We thank the commenters for raising concerns about the 
limitations of non-computable electronic signatures, such as scanned 
images of handwritten signatures. We agree that these forms generally 
do not provide robust support for identity verification, 
authentication, or assertion of signer intent. To address these 
limitations, and as we proposed, this final rule adopts the Digital 
Signatures Guide, which supports key features necessary for secure 
electronic signatures, including user authentication, message 
integrity, and nonrepudiation.
    We clarify that this rule does not prohibit health care providers 
or health plans from using other forms of electronic signatures in 
contexts outside of the adopted HIPAA standard transaction for health 
care claims attachments. However, when an electronic signature is used 
to sign attachment information at the time it is transmitted as part of 
a HIPAA-standard electronic health care claims attachments transaction, 
that signature must conform to the Digital Signatures Guide, as 
finalized in Sec.  162.2002(e). This requirement does not apply to 
documents created prior to transmission that may later be included in a 
claims attachment; only signatures affixed in the course of a HIPAA-
standard attachment transaction must meet the standard.
    With respect to unstructured documents, such as scanned images or 
PDFs used in attachments, health plans may not impose these electronic 
signature requirements except when they are transmitted as part of a 
HIPAA standard claims attachments transaction. In that case, a 
signature must meet the requirements of the adopted standard, though a 
health plan may not impose additional electronic signature requirements 
beyond the adopted standard.
    As previously discussed, the definition of electronic signature is 
deliberately broad to allow for industry flexibility and to avoid 
restricting current practices. We acknowledge the commenter's concern 
that the phrase ``electronic sound, symbol, or process'' could create 
confusion when implementing standardized processes, but this language 
is intended to encompass a wide range of electronic signature methods 
already in use across the health care industry, including digital 
images of handwritten signatures and other forms associated with the 
signed content. We are not altering the proposed definition that we 
finalize here, but should we find during the course of implementation 
of the adopted standard that covered entities require greater 
specificity, we may provide additional guidance or educational 
resources, as applicable, or consider further rulemaking.
    Comment: Multiple commenters stated that if HHS chooses to finalize 
the proposed rule, industry should be included in discussions on 
defining when an electronic signature should be required.
    Response: In the proposed rule, we stated that we are not proposing 
to specify when an electronic signature must be required. Instead, we 
defer to the industry to continue to establish those expectations (87 
FR 78450) consistent with the considerations we mentioned previously, 
including federal and state laws and regulations, accreditation 
standards, best practices, and payer requirements. We clarify in this 
final rule that the finalized HIPAA electronic signature standard 
applies only to attachment information transmitted by a health care 
provider in a HIPAA-standard electronic health care claims attachments 
transaction. Thus, while the health care industry may continue to set 
expectations for electronic signatures in other contexts, compliance 
with the adopted HIPAA standard is required in the specific context of 
claims attachments transactions covered by this rule.
    Comment: Multiple commenters provided feedback on the proposed 
definition of electronic signatures in the context of laboratories, 
explaining that laboratories face particular issues with respect to 
electronic signatures, highlighting confusion around what constitutes 
an electronic signature for electronically placed laboratory orders. 
Multiple commenters expressed concern regarding the scope of the 
electronic signatures definition and stated that the proposed 
definition could impact what is considered an appropriate electronic 
signature for individual data and medical records included in health 
care claims attachments, like laboratory orders. The commenters stated 
that the HL7 Version 2 (V2) messages used to communicate the laboratory 
order include data that identifies the ordering provider. A commenter 
noted that some laboratories have experienced declined payment claims 
for laboratory tests that were placed electronically in an EHR and 
subsequently transmitted over a secure connection using standard HL7 V2 
messages. Multiple commenters also noted that HL7 V2 messages have been 
used for over a decade without concerns raised regarding the validity 
of the orders placed. To resolve the electronic signature issues that 
laboratories face and establish a plan to resolve variations in what 
constitutes an electronic signature, commenters recommended that HHS 
convene a stakeholder meeting with, among others, CMS's Clinical 
Laboratory Improvement Amendments office, ONC, HL7, the Electronic 
Health Record Association (EHRA), and the American Clinical Laboratory 
Association.
    The commenters referenced language from previous CMS rulemaking, 
the Medicare Program; Payment Policies Under the Physician Fee Schedule 
and Other Revisions to Part B for Calendar Year (CY) 2011 final rule 
(75 FR 73170), which stated that the need for a signature only applies 
to requisitions, which are paper forms, but does not

[[Page 14374]]

impact interested parties who utilize an electronic process for 
ordering clinical diagnostic laboratory tests.
    A commenter noted subsequent conflicting guidance from a CMS-
authored Medicare Learning Network Matters fact sheet that suggested 
laboratory tests must be signed, and the 2012 Physician Fee Schedule 
final rule, which retracted the policy finalized in the 2011 Physician 
Fee Schedule final rule. Commenters sought clarification regarding 
whether the use of EHRs that electronically transmit the necessary data 
to the laboratory constitutes a valid, signed laboratory order that 
provides relevant evidence that an authorized health care provider 
ordered it. Additionally, commenters urged HHS to make it clear that 
the widely deployed current electronic laboratory ordering process 
would not be impacted by the HHS digital signature proposal and, 
therefore, would not require the provision of necessary evidence that 
the order was placed by an authorized health care provider, as this 
information is electronically traceable and readily available to both 
laboratories and providers.
    Multiple commenters requested that HHS confirm that it is not 
proposing that original forms of medical record entries be subject to 
these requirements and that the proposed definition for digital 
signatures for health care claims attachments does not change the 
current policy regarding upstream clinical workflows or place 
additional requirements on the current electronic laboratory ordering 
process.
    A commenter urged HHS to remove the example in the proposed rule at 
87 FR 78449 that reads ``[f]or example, for a laboratory to submit a 
claim for reimbursement of a laboratory test, a health plan may first 
require a physician visit and a signed physician order. When the 
laboratory later bills a health plan for the test, the plan may ask for 
evidence that it was ordered by an authorized health care provider; if 
the laboratory is unable to produce a signed order, it may not be 
reimbursed.'' The commenter stated this could be interpreted to apply 
to laboratory orders, which is not the intended focus of the health 
care attachments rule.
    Response: We appreciate commenters' concerns regarding the timing 
of signatures in clinical workflows and the implications for 
implementing digital signature requirements associated with this 
rulemaking, particularly with respect to laboratories. We recognize 
that, in practice, health care providers typically sign clinical notes 
or other documentation at the point of service or document creation, 
not at the point when a CDA is later generated and submitted as part of 
a claims attachment. As such, the process of adding a digital signature 
at the time of CDA generation may not align with established clinical 
and documentation workflows. To allay some concern, we clarify that 
this rulemaking applies solely to claims attachments transmitted as 
part of an electronic claim transaction and generated for that purpose 
and does not apply to, or alter, upstream clinical documentation 
processes or related provider practices. To be very clear, this final 
rule imposes no new requirements on clinical workflows, including, but 
not limited to, how laboratory orders are created, signed, and 
transmitted from EHRs to laboratory systems.
    By contrast, administrative workflows may be affected. Covered 
entities may need to establish organizational policies or technical 
workflows that designate how, when, and by whom an electronic signature 
is applied to a CDA package at the time it is generated for submission 
as a claims attachment, notwithstanding that an original document was 
previously signed by a provider. As such, adding a digital signature at 
the time of attachment generation may differ from established 
administrative processes and system interfaces, particularly for 
laboratory documentation and HL7 V2 messages.
    We also recognize the historical context cited by commenters, 
including CMS's 2011 and 2012 Physician Fee Schedule rules (75 FR 7310 
and 76 FR 73026) and related CMS guidance, and the resulting concerns 
about inconsistencies across programs. The scope of this final rule is 
limited to electronic signatures affixed to, and part of the 
requirements associated with, HIPAA health care claims attachments 
transactions, contemporaneous with when such transactions occur. It 
does not alter existing CMS, or any other, policies regarding 
electronic laboratory orders or impose documentation standards beyond 
those required in the HIPAA transaction.
    The signature required on a health care claims attachment--at the 
time of a health care claims attachment transaction--is distinct and 
different from a signature that may have been affixed for documentation 
required at the time that health care services were provided, such as 
an ordering provider's signature on a lab order or provider note. 
Should a document (created and signed earlier by a provider) later be 
requested as part of a claims attachment and should a health plan 
require a signature on the attachment, that signature must be a digital 
signature that complies with the standard adopted in this final rule. 
That signature may be applied by the individual or entity submitting 
the claim, or by an authorized delegate of that submitter; it is not 
necessary to obtain a new signature from the original author of the 
clinical document.
    Regarding the commenters' concern with the example cited at 87 FR 
78449, we acknowledge, in retrospect, it was susceptible to being 
interpreted as imposing new or conflicting requirements on laboratory 
ordering processes but emphasize that is not how it should be 
interpreted. Rather, our intent was to illustrate a scenario in which a 
health plan, in the context of adjudicating a claim, may request 
supporting documentation from a provider. Should a health plan require 
submission of such a document as part of health care claims processes 
pursuant to a HIPAA health care claims attachment transaction, and 
should it require on such documentation a signature, the digital 
signature requirements finalized here would apply to that attachment 
submission; they would not apply, however, to the original clinical 
order or its format.
    We also recognize that questions may arise regarding who may apply 
the electronic signature on a claims attachment. The finalized standard 
does not prescribe that a signature must be applied by a specific 
individual, but, rather, requires that the electronic signature be 
executed by a person with the intent to sign the attachment 
information. This allows for organizational delegation consistent with 
provider policies, state laws, and payer requirements, provided that 
the signer has appropriate authority and that the technical 
specifications for authentication, message integrity, and 
nonrepudiation are met.
    We acknowledge the concerns raised by interested parties associated 
with laboratories and appreciate the possibility that there may be 
aspects of laboratory-specific workflows, regulatory requirements, and 
data exchange practices, particularly in relation to ordering, 
documentation, and claims submission processes, that may require 
particular attention. We intend to work closely with covered entities 
generally--but will particularly focus on laboratory-related entities--
to support and enforce consistent and practical implementation of this 
rule's electronic signature requirements. That will involve monitoring 
implementation challenges and prioritizing collaborative education and 
coordination to support successful adoption, while avoiding unintended 
disruption to established processes and operations.

[[Page 14375]]

    Stakeholder input will also inform our consideration of whether 
additional guidance or future rulemaking may be necessary to clarify 
the application of these requirements. Among other things, we will work 
with affected entities to identify any operational or technical 
barriers.
    Comment: A commenter stated that an organizational delegation 
policy will have to be in place to add an electronic signature when the 
CDA is generated, which will need to be done before a technical 
solution could be implemented. The commenter stated that providers sign 
clinical notes at the time they are written, not when they create a CDA 
to send clinical notes electronically.
    Response: We appreciate the commenter's concern regarding the 
timing of signatures in clinical workflows and any implications for 
implementing digital signature requirements under this rule. The 
electronic signature requirement finalized in this rule applies only to 
the claims attachment as transmitted in a HIPAA-standard electronic 
transaction, regardless of when the underlying clinical document was 
created. This means that this rulemaking does not require signatures on 
documents produced prior to the attachment request, though, as we have 
noted, health plan policies or other law may require that. Rather, 
pursuant to the requirements of this final rule, an electronic 
signature is required only on the attachment package being transmitted 
and only when a health plan requires an electronic signature.
    As we clarified in a prior response, covered entities may need to 
establish organizational policies or technical workflows to designate 
how, when, and by whom the electronic signature is applied to the 
attachment package. In some cases, the signature may be applied at the 
point of CDA assembly, potentially by a delegate authorized to do so, 
based on pre-existing documentation and previously affixed clinical 
signatures. This approach is consistent with the flexibility offered in 
the Digital Signatures Guide, which supports organizational delegation 
models and does not prescribe specific timing or roles for signing. 
This clarification aligns with earlier discussion regarding laboratory 
documentation and HL7 V2 messages, emphasizing that the electronic 
signature applies to the administrative claims attachment artifact and 
does not alter upstream clinical workflows or document creation 
practices.
    Comment: Multiple commenters expressed concern regarding the 
ambiguity of the proposed electronic signature definition and stated 
that it may create confusion and unintentionally force changes in 
clinical workflows. A commenter stated that the proposed rule does not 
address the absence of a practical way to obtain an electronic 
signature on an electronic test order and explained the ways that the 
X12N 275 standard, EHRs and Laboratory Information Systems (LIS), and 
CDA do not fulfill this need. The commenter also explained that the HL7 
V2 standard, the HL7 Version 2.5.1 IG: Laboratory Orders Implementation 
Guide (LOI IG) from EHR, Release 1 and each LIS-EHR interface will have 
to be updated to include an electronic signature as part of an 
electronic order. The commenter also noted that guidance documents 
indicate a signature can be handwritten or electronic, but that there 
is little guidance on what constitutes an electronic signature.
    Response: We appreciate commenters' concerns regarding the 
feasibility of applying electronic signatures to laboratory test orders 
and the potential impacts on clinical workflows. As we explain in this 
final rule, including in the previous responses, our finalized 
requirements pertain only to electronic health care claims attachments 
transactions, while the definition of ``electronic signature'' 
finalized in Sec.  162.103 is deliberately broad to accommodate current 
industry practices and future innovations.
    This final rule does not require that electronic test orders, such 
as those communicated in HL7 V2 messages or the HL7 2.5.1 LOI IG, 
include an electronic signature (whether such a signature might be 
required by virtue of some other law or practice would be beyond the 
scope of this rule). The electronic signature requirements finalized 
here only apply when a health care provider transmits attachment 
information electronically as part of a claims attachments transaction, 
and only if a health plan requires a signature on that attachment.
    We acknowledge that laboratory test orders may later be requested 
by a health plan as a health care claim attachment. This final rule 
does not address clinical system configurations, but we will monitor 
implementation issues and, as necessary, engage with parties in the 
health care industry should additional guidance be necessary to clarify 
whether or how the requirements of this final rule interact with 
existing health IT infrastructure.
2. Electronic Signature Standard
    In the HIPAA Standards for Health Care Attachments proposed rule, 
we provided an overview of electronic signatures and their ability to 
effectively authenticate a signer's identity (87 FR 78450). We included 
a discussion of the need to be able to electronically validate 
attachment information signed by a health care provider and 
nonrepudiation.
    We proposed that, where a health care provider uses an electronic 
signature in a health care attachments transaction, the signature must 
conform to the implementation specifications in the Digital Signatures 
Guide. Specifically, we proposed to adopt in Sec.  162.2002(f) 
(renumbered to Sec.  162.2002(e) in this final rule) the HL7 IG for CDA 
Release 2: Digital Signatures and Delegation of Rights, Release 1 
(Digital Signatures Guide) for electronic signatures for attachment 
information transmitted by a health care provider in an electronic 
health care claims attachments transactions specified in Sec.  
162.2001(a) (87 FR 78451). We also proposed to incorporate the same by 
reference in Sec.  162.920. We refer readers to the proposed rule for 
the full discussion of the support provided by, and specifications of, 
the Digital Signatures Guide (87 FR 78450).
    We solicited comments on the proposed definition of electronic 
signature and the proposed Digital Signatures Guide as the attachment 
information electronic signatures standard. We recognize that several 
commenters, particularly from the laboratory industry, raised important 
questions about how the finalized electronic signature requirement may 
intersect with longstanding laboratory workflows, electronic ordering 
processes, and regulatory obligations. While the digital signature 
requirement adopted in this rule applies only to the transmission of 
health care claims attachments and not to the underlying clinical 
documentation, as noted, we will closely monitor implementation to 
gauge whether it might be necessary for us to provide additional 
clarity to ensure consistent and practical implementation across 
provider types.
    Comment: Multiple commenters expressed support for the adoption of 
the Digital Signatures Guide. A commenter stated that this will help to 
ensure authentication, message integrity, and nonrepudiation of 
electronic signatures for claim attachments.
    Response: We thank commenters for their feedback and support for 
our proposal.

[[Page 14376]]

    Comment: A commenter disagreed with the adoption of the Digital 
Signatures Guide, stating that the level of authentication will be 
unnecessary, especially for exchange between entities that have signed 
business agreements or standard operating procedures (SOPs).
    Response: We appreciate the commenter's perspective regarding the 
use of business agreements or SOPs to establish trust between entities. 
However, we do not believe that the existence of such agreements alone 
provides sufficient assurance of the authenticity and integrity of 
attachment information submitted as part of a claims transaction. As we 
noted in the proposed rule (87 FR 78450), the lack of an electronic 
signature means the attachment information cannot be relied upon to be 
accurate. Electronic signatures offer critical technical safeguards, 
namely authentication, message integrity, and nonrepudiation, that 
otherwise cannot be assured by SOPs alone.
    Comment: Multiple commenters stated that accommodating the 
requirements of an electronic signature as described in the Digital 
Signatures Guide would require updates to workflow, operational 
interfaces between EHRs and laboratories, and HL7 V2 message 
formatting, thus increasing documentation burden with no clear benefit. 
Multiple commenters stated that the Digital Signatures Guide is 
applicable only to a CDA-based document but cannot be used in an HL7 V2 
lab order message that solely contributes data that may be included in 
a health care attachment. The commenters stated that should HHS 
finalize the electronic signature proposal, there would be a need to 
update the CDA and FHIR specifications and corresponding electronic 
signatures.
    Additionally, multiple commenters recommended that an electronic 
signature should only be required if requested or indicated as required 
by the health plan. A commenter recommended that the electronic 
signature proposal only apply to health care attachments as a distinct 
artifact submitted by a provider to support a claim or referral/prior 
authorization request to avoid impacting upstream clinical processes.
    Response: We appreciate the commenters' concerns about potential 
impacts to workflows and system interfaces, particularly in relation to 
laboratory documentation and HL7 V2 messages. We clarify that the 
electronic signature standard adopted in this final rule applies only 
to health care attachments submitted as part of a claims transaction. 
As we previously noted, it does not alter or impose requirements on 
upstream clinical workflows, such as the creation or signing of 
clinical notes, lab orders, or other documentation. In some cases, a 
provider may have already signed the underlying clinical document, so 
it could be argued that applying a signature to a claims attachment at 
the time of claims submission is duplicative. To the contrary, a 
signature applied to a claims attachment would serve a distinct 
administrative purpose: ensuring authentication, message integrity, and 
nonrepudiation for the claims attachment itself, independent of the 
original clinical signature. This rule does not override or conflict 
with existing messaging or laboratory processes; it applies 
specifically to the signature applied to the attachment artifact 
submitted in a health care attachments transaction for claims purposes.
    Our intent is to ensure that the electronic signature standard 
applies only where required for claims attachments when submitted in a 
health care attachments transaction, without affecting how clinical 
documentation is authored, signed, or transmitted in routine care.
    Comment: Multiple commenters recommended that HHS not adopt the 
electronic signature provisions. Because the proposed rule regulation 
text in Sec.  162.2002(f) (renumbered to Sec.  162.2002(e) in this 
final rule) was missing, commenters expressed concern about HHS 
finalizing such a requirement.
    Response: On March 17, 2023, we published a correction notice that 
fixed technical and typographical errors that appeared in the December 
21, 2022 HIPAA Standards for Health Care Attachments proposed rule. 
Shortly after that, on March 24, 2023, to ensure that industry would be 
able to adequately comment on the corrected proposed rule, we extended 
the proposed rule comment period by 30 days via a Federal Register 
notice titled: Adoption of Standards for Health Care Attachments 
Transactions and Electronic Signatures, and Modification to Referral 
Certification and Authorization Transaction Standard: Extension of 
Comment Period (88 FR 17780). That notice was published prior to the 
expiration of the proposed rule's initial 90-day public comment period. 
While the proposed rule inadvertently omitted certain proposed 
regulation text--Sec.  162.2002(f) (renumbered to Sec.  162.2002(e) in 
this final rule), that identified the electronic signature standard we 
proposed to adopt--the proposed rule did include fulsome preamble 
discussion of this policy and stated twice (87 FR 78449 and 78450) that 
the policy would be located in Sec.  162.2002(f). While there is no 
doubt the correction notice (that did not introduce any new policies) 
and the comment period extension remedied any perceived shortcomings, 
even the initial notice of proposed rulemaking, through its fulsome 
preamble discussion, afforded adequate notice to afford public comment. 
We have adequate grounds to finalize this proposal.
    Comment: A commenter stated that HHS should reiterate that trading 
partners should determine when an electronic signature is required in 
an electronic health care attachments transaction and that the HL7 
standard is only needed when a health care provider uses an electronic 
signature in a health care attachments transaction.
    Response: We agree. It is important to note that this final rule 
adopts a generalized definition for electronic signatures applicable to 
health care claims (or equivalent encounter information) attachments 
transactions only and adopts the requirement that electronic signatures 
conform to the standards in the Digital Signatures Guide. It is the 
health plan's prerogative to determine when and where signatures must 
be affixed to documents.
    Comment: A commenter proposed the use of DocuSign, which the 
commenter asserted that the Internal Revenue Service uses as its 
document verification service.
    Response: We thank the commenter for the suggestion. We did not 
propose use of DocuSign in the HIPAA Standards for Health Care 
Attachments proposed rule since it does not conform to the HIPAA 
Administrative Simplification transaction standards.
    Comment: A commenter expressed that they do not believe a standard 
for electronic signatures is necessary. The commenter stated that the 
industry already has trust frameworks and verification for digital 
transactions between providers and payer organizations and questioned 
the need for further authentication via an electronic signature 
standard. Another commenter referenced the use of Trust Credentials and 
stated that electronic signatures must be bound to the real, ID-proofed 
identity of a person or organization. The commenter recommended that 
standards be consistent across federal agencies and digital signatures 
be verifiable by an out-of-band query to the issuer of the Trust 
Credential confirming identity and validity. The commenter provided

[[Page 14377]]

an overview of existing standards for identity proofing, 
authentication, and assertions that they stated have been adopted by 
ASTP/ONC and used by the Direct Standard and the Trusted Exchange 
Framework and Common Agreement (TEFCA). The commenter also explained 
how patients, providers, health plans, and devices are ID proofed under 
DirectTrust and that the real identity is bound to a Trust Credential. 
Additionally, the commenter described how a Trust Credential is 
assigned under TEFCA Individual Access Services. The commenter noted 
that x.509 Certificates are bound to a single entity to allow the 
ability to identify and remove one bad actor without revoking all 
credentials.
    A commenter recommended that for the industry to reliably utilize 
digital signatures nationwide, HHS should consider implementing minimum 
identity assurance requirements using Identity Assurance Levels 2 
(IAL2) and the NIST Special Publication (SP) 00-63A and stated that HHS 
should consider that digital signatures only work if both the signer 
and the verifier agree to use the same digital signature standard. The 
commenter recommended implementing Private Signing Key Protection to 
lower the likelihood of a stolen private key being used to forge a 
digital signature.
    Response: We appreciate commenters' recommendations and 
perspectives regarding the need for an electronic signature standard, 
and we recognize that many organizations already operate under trust 
frameworks such as those supported by DirectTrust and TEFCA. We also 
understand the importance of identity assurance and credentialing in 
enabling secure, verifiable transactions.
    In this final rule, we adopt the Digital Signatures Guide as the 
standard for electronic signatures on attachment information 
transmitted in electronic health care claims attachments transactions. 
We selected this guide because it supports the core features--
authentication, message integrity, and nonrepudiation--essential to 
ensuring trust in electronic signatures.
    While identity management, including credential issuance, proofing, 
and validation, is critical to the effectiveness of digital signature 
technologies, it is outside the scope of this regulation. The final 
rule does not establish minimum identity assurance levels or define a 
trust framework for all covered entities. We expect such entities to 
rely on credentialing authorities and certificate management protocols 
that align with industry's best practices, including those referenced 
by the commenters (for example, NIST SP 800-63A, IAL2, and x.509 
certificate frameworks).
    Comment: Multiple commenters recommended that HHS review existing 
processes that are relevant to these proposals. A commenter referenced 
the Drug Enforcement Administration's (DEA) definition at 21 CFR part 
1311 of Electronic Prescription of Controlled Substances and the DEA's 
IFR, stating that HHS could use that as a guide. Multiple commenters 
recommended that HHS evaluate the ANSI X12.58 Security Structures 
control standard as an X12 native authentication, verification, 
integrity, and electronic signature method.
    Response: We appreciate commenters' recommendations to evaluate 
existing standards and frameworks that support identity verification, 
message integrity, and electronic signature functionality, including 
the DEA's requirements for electronic prescriptions of controlled 
substances at 21 CFR part 1311 and the ANSI X12.58 Security Structures 
control standard.
    The DEA's framework provides a model for authentication and 
nonrepudiation in clinical transactions, and the ANSI X12.58 standard 
was specifically developed to address security controls, including 
electronic signatures, in the context of X12-based EDI. These standards 
reflect valuable experience and technical insights into the secure 
exchange of health care data. With respect to the commenter's 
suggestion to evaluate the ANSI X12.58 Security Structures standard for 
authentication and digital signatures in X12 transactions, we 
appreciate this input. X12.58 is relevant because it provides a 
structured framework for securing X12-based transactions, including 
mechanisms for verifying sender identity, ensuring message integrity, 
and supporting nonrepudiation. While we are not adopting X12.58 as an 
electronic signature standard at this time, partly to maintain 
alignment with broader HIPAA standardization efforts and because 
industry adoption varies, we acknowledge its relevance for securing 
X12-based transactions.
    In this rule, we are finalizing the adoption of the Digital 
Signatures Guide as the standard for digital signatures on health care 
claims attachments. We selected this IG because, as mentioned earlier, 
it directly aligns with the content structure of the adopted attachment 
standard and includes supplemental specifications to support 
authentication, message integrity, and nonrepudiation. The CDA-based 
digital signature model is compatible with the data formats and 
exchange protocols finalized for use in electronic claims attachments 
and was developed through consensus processes within the standards 
development industry.
    We agree that there may be opportunities for broader alignment of 
electronic signature standards across federal programs. We will 
consider this input in any future rulemaking or technical guidance 
related to electronic transaction security and authentication. We also 
encourage ongoing industry collaboration and coordination across SDOs 
to promote convergence and reusability of authentication methods where 
appropriate.
    Comment: Multiple commenters sought clarification on the 
relationship between the HIPAA Standards for Health Care Attachments 
proposed rule (87 FR 78438) that contained electronic signature 
proposals, and CMS's Interoperability and Prior Authorization proposed 
rule (87 FR 76238) which contained no such proposals. A commenter noted 
that there is an overlap of payers seeking attachment information to 
support prior authorization but that the CMS Interoperability and Prior 
Authorization proposed rule does not include any proposed requirements 
for digitally signing medical documentation. A commenter stated that 
the two proposed rules seem to have contradictory provisions and 
requested that HHS address these contradictions and confirm if the 
proposed digital signature requirements apply only to health care 
attachments and not to other areas of clinical workflow.
    Response: We appreciate commenters' requests for clarification on 
any overlap between the electronic signature requirements finalized in 
this rule and the proposals in CMS's Interoperability and Prior 
Authorization proposed rule. We reiterate that in this final 
rulemaking, we are not finalizing the prior authorization attachments 
transaction that we had proposed, and the digital signature 
requirements adopted here do not apply to, or alter, the prior 
authorization processes or API requirements established under the CMS 
Interoperability and Prior Authorization final rule. Therefore, the 
digital signature standard being adopted in this rulemaking will apply 
only to health care claims attachments transactions. Accordingly, the 
requirements finalized in this rule operate independently and do not 
overlap with those applicable to prior authorization under other CMS 
regulations.
    Final Action: After consideration of the public comments we 
received, we are finalizing our proposals, without

[[Page 14378]]

modification, to adopt the definition of electronic signatures in Sec.  
162.103 and the Digital Signatures Guide for use with health care 
claims attachments in Sec.  162.2002(e).

H. Modification to a HIPAA Standard

1. Modifications to Standards
    Section 1174 of the Act requires the Secretary to review the 
adopted standards and consider modifications to them, which include 
additions to the standards, as appropriate, but not more frequently 
than once every 12 months. Section 1174(b)(2)(B)(ii) of the Act 
requires that modifications must be completed in a manner that 
minimizes disruption and the cost of compliance.
    Section 1175 of the Act prohibits health plans from refusing to 
conduct a transaction as a standard transaction. It also prohibits 
health plans from delaying the transaction or adversely affecting, or 
attempting to adversely affect, a person or the transaction itself on 
the grounds that the transaction is in standard format. It establishes 
a timetable for covered entities to comply with any standard, 
implementation specification, or modification as follows: for an 
initial standard or implementation specification, no later than 24 
months (or 36 months for small health plans) following its adoption; 
for modifications, as the Secretary determines appropriate, but no 
earlier than 180 days after the modification is adopted. As authorized 
under the Act, HHS implemented 45 CFR 162.910, which sets out the 
standards maintenance process and defines the role of DSMOs. The two 
SSOs associated with this final rule are the ASC X12 and HL7.
    In the HIPAA Standards for Health Care Attachments proposed rule, 
we proposed to modify the adopted Version 5010 of the X12N 278 standard 
for prior authorization transactions to Version 6020. We refer readers 
to the proposed rule for the full discussion of the maintenance process 
for health care transaction standards adopted by the Secretary, as well 
as an overview of the history of the NCVHS recommendations related to 
our proposals (87 FR 78451). We summarize public comments submitted 
regarding this proposal and provide our responses that follow.
    Comment: A commenter expressed support for keeping up-to-date with 
newer versions of X12 standards, but recommended allowing historic 
versions for an extended period and/or allowing for a reasonable amount 
of time for systems to be upgraded to the newer X12 standard. The 
commenter indicated that 2 years would be a good starting point, but 
recommended a longer window where both standards would be allowed given 
the large number of requirements occurring over the next few years and 
specifically referenced several HHS initiatives and regulations. 
Another commenter recommended that HHS build language into the final 
rule allowing for regular version updates to standards so that 
providers and health systems could be more agile in communicating 
electronic health information. The commenter pointed out that there may 
be too much specificity in the standard version noted in the proposed 
rule and stated that some practitioners have had to navigate 
implementing Version 5010 without the ability to make changes in simple 
things such as dental documentation.
    Response: We appreciate the commenter's feedback. HHS has 
considered similar recommendations regarding regular upgrades to 
standards to provide, by rulemaking, HIPAA covered entities with a more 
routine cadence in the adoption of updated standards and operating 
rules. We continue to assess potential alternatives within the scope of 
our authority and consistent with the law and will continue to work 
with industry to identify means by which updated standards can be more 
timely adopted and implemented. It is important to note that section 
1174 of the Act requires the Secretary to review the adopted standards 
and adopt modifications to them as appropriate, but not more than once 
every 12 months. Moreover, modifications must be completed in a manner 
that minimizes disruption and the cost of compliance.
    As discussed in the proposed rule, and again here in this final 
rule, section 1175(b)(1)(A) of the Act prescribes a 24-month period for 
which initial compliance is required, and in the case of a small health 
plan, 1175(b)(1)(B) of the Act allows 36 months for compliance. 
However, section 1104(c)(3) of the Affordable Care Act, under which we 
are adopting the health care claims attachment standards, reiterated 
the original HIPAA requirement to adopt a health care claims attachment 
standard and a single set of associated operating rules, and spoke 
specifically to timing, providing that the Secretary must adopt the 
standard and operating rules by January 1, 2014, to be effective no 
later than January 1, 2016, and that the Secretary may adopt the 
standard and operating rules on an interim final basis. We acknowledge 
that this final rule comes more than 10 years after the Affordable Care 
Act-specified adoption date, but interpret that provision to mean that 
for the attachment standards adopted under section 1104(c)(3) of the 
Affordable Care Act there should be a 2-year compliance date for all 
covered entities.
    That same Affordable Care Act provision requires that the adopted 
standard be ``consistent with the X12 Version 5010 transaction 
standards,'' and we explain in the HIPAA Standards for Health Care 
Attachments proposed rule and in section II.D.3. and elsewhere in this 
final rule, our rationale for adopting Version 6020 with respect to the 
standards we are adopting as final. We also observe that HIPAA was 
enacted nearly 30 years ago, and, in that time, we believe that covered 
entities have gained experience moving from one version of a standard 
to the next.
2. Modification to Referral Certification and Authorization Transaction 
Standard
    In the HIPAA Standards for Health Care Attachments proposed rule, 
we included a robust discussion of our proposal to adopt Version 6020 
of the X12N 278 standard for a referral certification and authorization 
transaction for non-claims-related attachment requests and responses 
(87 FR 78451). We stated that although the NCVHS did not recommend a 
specific version of the standard, we proposed to adopt Version 6020 of 
the X12N 278 standard because Version 6020 better harmonizes with the 
X12N 275--Additional Information to Support a Health Care Services 
Review (006020X316) standard that we proposed to adopt for health care 
providers transmitting attachment information. For the full discussion, 
we refer readers to the proposed rule (87 FR 78451).
    The referral certification and authorization transaction under 
Sec.  162.1301 includes two transmission types from health care 
providers to health plans: prior authorization requests and referral 
certification requests. The X12N 278 standard is currently required for 
both types of transmission. Although it would have been technically 
feasible for us to have proposed to adopt Version 6020 only for prior 
authorization transmissions specified in Sec.  162.1301(a) and retain 
Version 5010 for referral certification transmissions specified in 
Sec.  162.1301(b), we instead proposed Version 6020 for both 
transmission types because it includes improvements over Version 5010 
that better support both transmission types, and we believed it would 
have been more burdensome for covered entities to have to maintain both 
X12N 278 versions.
    Comment: Multiple commenters expressed support for the proposed

[[Page 14379]]

adoption of Version 6020 of the X12N 278 transaction standard. A 
commenter noted that Version 6020 accommodates dental procedures, which 
reduces administrative burden. Conversely, multiple commenters 
disagreed with the proposed adoption of Version 6020 of the X12N 278 
standard, noting that there have been significant advancements and 
version updates, and some commenters recommended that HHS consider 
alternative versions of the X12N 278 standard, like Version 8020. 
Multiple commenters expressed concern that implementing Version 6020 
may increase cost and burden, and a commenter stated that there are 
issues with managing multiple standards and versions and gave the 
example that the X12N 837 claims standard could be in Version 8020, 
while the changes proposed could be at Version 6020 or Version 5010.
    Response: As we explain in section III.A. of this final rule, we 
are not finalizing our proposal to adopt the prior authorization 
transaction standard, so we are not adopting the X12N 278--Health Care 
Services Request for Review and Response (006020X315), September 2014. 
We thank the commenters who supported our proposal and appreciate the 
commenters' suggestions to consider alternative versions of the X12N 
278 standard, like Version 8020, and will continue to monitor and 
assess whether alternative versions of the current standard may better 
address the needs of the industry for enhanced administrative 
simplification.
    Final Action: After consideration of the public comments we 
received, and for reasons previously discussed herein, we are not 
adopting a modification to the X12N 278 standard for prior 
authorization transactions.

I. Compliance Dates

    We proposed to adopt new standards and a modification to a standard 
in the HIPAA Standards for Health Care Attachments proposed rule. 
Section 1175(b) of the Act provides for a compliance date not later 
than 24 months after the date on which an initial standard or 
implementation specification is adopted for all covered entities except 
small health plans. However, section 1104(c)(3) of the Affordable Care 
Act requires the adoption of standards for health care attachments and 
operating rules with a 2-year compliance timeframe for all covered 
entities and offers no extended timeframe for small health plans. In 
the HIPAA Standards for Health Care Attachments proposed rule, we 
proposed that the same health care attachments standards would apply to 
both claims and prior authorization attachments transmissions. As the 
transmission standard for each type of attachments transaction would be 
the same, we stated that we believed the compliance date for both types 
should also be the same. In addition, because we proposed to treat the 
two attachments processes together as one transaction in new Subpart T, 
we stated that adopting the same compliance timeframe for all covered 
entities would avoid the complications that a bifurcated compliance 
timeframe (that is, one for claims processes and another for prior 
authorization processes) may raise.
    The effective date is the date the rule amends the Code of Federal 
Regulations (CFR), which is typically 60 days after the date of 
publication in the Federal Register.
    We proposed to adopt the following eight standards for health care 
claims attachments transactions and electronic signatures:
     HL7 IG for CDA Release 2: C-CDA Templates for Clinical 
Notes--Introductory Material, Release 2.1 (HL7 C-CDA IG Volume One).
     HL7 IG for CDA Release 2: C-CDA Templates for Clinical 
Notes--Templates and Supporting Material, Release 2.1 (HL7 C-CDA IG 
Volume Two).
     HL7 CDA Release 2 Attachment IG: Exchange of C-CDA Based 
Documents, Release 1 (HL7 Attachments IG).
     X12N 275--Additional Information to Support a Health Care 
Services Review (06020X316).
     X12N 275--Additional Information to Support a Health Care 
Claim or Encounter (06020X314).
     X12N 277--Health Care Claim Request for Additional 
Information (006020X313).
     X12N 278--Health Care Services Request for Review and 
Response (006020X315), September 2014.
     HL7 IG for CDA Release 2: Digital Signatures and 
Delegation of Rights, Release 1 (Digital Signatures Guide).
    In accordance with section 1104(c)(3) of the Affordable Care Act, 
which requires the Secretary to adopt a transaction standard for health 
claims attachments and prescribes a uniform 2-year compliance date for 
all covered entities (with no special provision for small health plans, 
unlike the original HIPAA statute), we proposed that the compliance 
dates for the policies adopted in this final rule would be 24 months 
from the effective date of this rule. We stated that we would specify 
these compliance dates in Sec.  162.2002.
    Section 1175(b)(2) of the Act requires the Secretary to determine 
an appropriate compliance date for the implementation of modified 
standards, such as the modification of the X12N 275 standard from 
Version 5010 to Version 6020, by taking into account the time needed to 
comply due to the nature and extent of the modification. The Act also 
requires that the compliance date be no earlier than the last day of 
the 180-day period, beginning on the date the modification is adopted 
(that is, the effective date of the final rule in which the 
modification is adopted). As discussed in the HIPAA Standards for 
Health Care Attachments proposed rule, we proposed to adopt Version 
6020 of these standards because they better harmonize with the X12N 
275--Additional Information to Support a Health Care Claim or Encounter 
(006020X314) and the X12N 275--Additional Information to Support a 
Health Care Services Review (006020X316) standards we proposed to adopt 
for the routing/envelope of attachment information by the provider. We 
stated that X12 recommended to the NCVHS that all parties to those 
transactions use Version 6020 of the standards as they are most 
compatible with each other. In the proposed rule, we discussed that 
Version 6020 of the X12N 278, as the standard for referral 
certification and authorization transactions, would be used by a health 
plan in conjunction with Version 6020 of the X12N 275 standard, which a 
health care provider would use to electronically transmit attachment 
information to a health plan in support of a prior authorization 
request. As the X12N 278 standard would feature in the new health care 
attachments transaction, we stated that it would be important to align 
the compliance dates for the proposed modification to the X12N 278 
standard and the health care attachments standards. Accordingly, we 
proposed that covered entities would need to comply with Version 6020 
of the standard 24 months after the effective date of the final rule. 
We reflected this compliance date in Sec.  162.1302 by: (1) revising 
paragraph (c) to specify only the standard identified in paragraph 
(b)(2)(i); and (2) adding new paragraph (d) to require covered entities 
to use, in paragraph (d)(1), Version 5010 X12N 278 for 24 months after 
the effective date of the final rule, and in paragraph (d)(2), Version 
6020 X12N 278 on and after 24 months after the effective date of the 
final rule. We solicited comments on this proposed approach.
    Comment: Multiple commenters expressed support for the proposed 
compliance date of 24 months for health

[[Page 14380]]

care attachments standards and electronic signatures standard, and the 
updated standard for referral certification and authorization 
transactions. A commenter stated that the proposed compliance date 
would provide sufficient time for providers, health plans, and 
clearinghouses to adopt new standards and IGs. A commenter noted the 
current voluntary use of standards and stated that limiting the scope 
to just claims attachments should allow for easy implementation within 
the 24-month timeframe for the industry.
    Response: We appreciate the commenters' feedback and support. We 
are finalizing the 24-month compliance date for the health care claims 
attachment standards and the electronic signature standard that we 
adopt in this final rule. As we have noted, we will closely monitor the 
rule's implementation and, should we learn of concerns, will work with 
the industry to address them. Some commenters supported a 24-month 
compliance date for the modified standard for referral certification 
and authorization transactions (X12N 278 Version 6020), but we are not 
adopting that modification, as discussed in section III.A. and 
elsewhere in this final rule.
    Comment: Multiple commenters recommended that HHS finalize a 
shorter compliance date, ranging from as soon as practical to 18 
months, instead of the proposed compliance date of 24 months after the 
effective date of the final rule. Another commenter requested urgent 
adoption of the attachment standards, with a requirement for full 
implementation within 12 months of adoption, not 24 months as HHS 
proposed. That commenter stated that health plans have adequate notice 
from HHS to start planning and building the platform and stated that if 
a health plan expects that health care providers adapt to a health 
plan's demand to provide attachments with 2-3 months' notice, it is 
more than reasonable to expect health plans to implement electronic 
health care attachments standards within 12 months or less. The 
commenter believed that such requirement would comply with the 
statutory compliance timeframe of no later than 24 months following 
adoption, and stated that if any health plan has difficulty 
implementing the requirements, it could suspend its attachments for 
claims and prior authorization requirements until it was able to comply 
with electronic health care attachments standards, which the commenter 
believed would be the only fair solution for health plans, patients, 
and providers. Conversely, a commenter expressed appreciation for HHS's 
efforts to establish a timeline for the adoption of the final rule but 
encouraged HHS to be flexible as needed with the 24-month compliance 
date to give providers and health systems more time to be compliant 
with new requirements.
    Response: We acknowledge the commenters' view that a shorter 
compliance period could allow the industry to benefit from the 
standards sooner and recognize the view that a shorter timeline could 
be permissible under the statute's ``no later than 24 months'' 
language. However, with respect to the health care claims attachment 
standards and the electronic signature standard that we are adopting in 
this rule, we are adopting a 24-month timeframe to ensure uniform 
industry implementation and prevent the fragmentation that variable 
compliance periods might engender. We appreciate the commenter's 
concern that health plans often require health care providers to meet 
aggressive timelines and that a shorter compliance date could encourage 
quicker benefits realization. Nevertheless, preparing for the adoption 
of new standards will require HIPAA covered entities, potentially along 
with their health IT vendors or service partners, to engage in a series 
of coordinated steps requiring careful planning that may include 
updating systems, training staff, and testing with trading partners. As 
such, we believe the 24-month timeframe is necessary to support 
successful implementation.
    Regarding the suggestion that health plans suspend their attachment 
requirements should they be unable to comply on time, we clarify that 
once the compliance date is reached, all covered entities are legally 
required to use the adopted standards when conducting health care 
claims attachment transactions electronically. However, we encourage 
early preparation, coordination, and testing among trading partners to 
ensure readiness and minimize implementation burdens. We note that 
nothing in this rulemaking would prohibit a health plan from electing 
to limit or suspend its health care claims attachment requirements.
    Comment: Multiple commenters expressed concern with the compliance 
date, citing the need for real-world testing of the proposed standards. 
A commenter stated that attachments transaction standards must be 
tested with all end-users, including physicians, in a variety of 
settings, including small, independent, and rural physician practices 
to ensure the standards are effective and efficient and suitable for 
adoption. Another commenter recommended HHS exercise enforcement 
discretion following the 24-month implementation period to allow 
industry-wide testing as it will likely require the full 24 months for 
implementation and testing.
    Response: In accordance with section 1104(c)(3) of the Affordable 
Care Act, which requires the Secretary to adopt a transaction standard 
for health claims attachments and prescribes a uniform 2-year 
compliance date for all covered entities (with no special provision for 
small health plans, unlike the original HIPAA statute), the compliance 
dates for the policies adopted in this final rule are 24 months from 
the effective date of this rule.
    We acknowledge the commenters' concerns about the need for real-
world testing, especially among small, independent, and rural physician 
practices, and note that falls within the coordinated steps that we 
speak about in a previous response. We agree that end-user validation 
in a variety of clinical and operational settings is essential to the 
successful adoption of the standards and encourage interested parties 
to begin implementation and testing efforts as early as possible to 
ensure that all participants have sufficient time to validate workflows 
and system performance.
    We also acknowledge the concern that some payers and vendors may 
need to undertake new development work for the adopted standards. A 
commenter, for example, noted that while certain EHR and revenue cycle 
systems previously implemented the X12N 276/277 claims status 
transactions, some payers did not do so at the time of the Version 4010 
standards (we clarify that these statements reflect a commenter's 
perspective, not an HHS finding that payers failed to comply with 
adopted standards). We encourage such payers to work closely with 
vendors, clearinghouses, and providers to identify and address gaps 
early, and to comply with all adopted HIPAA standards.
    Regarding a commenter's recommendation that we utilize enforcement 
discretion following the 24-month period, we emphasize that we will 
monitor implementation progress and, to the extent necessary, consider 
appropriate action, consistent with our general approach to HIPAA 
Administrative Simplification efforts.
    Finally, we emphasize that early testing, collaboration with 
trading partners, and use of implementation resources will be essential 
for all covered entities to meet the compliance deadline.

[[Page 14381]]

    Comment: Multiple commenters recommended that HHS provide support 
similar to what was provided in the transition from ICD-9 to ICD-10. A 
commenter agreed with the 2-year timeframe only if HHS requires 
milestones, testing, and implementation support to ensure performance 
to the standards by the compliance date.
    Response: We agree that consistent communication and implementation 
support are important to successful adoption of the standards. We 
strongly encourage covered entities to develop internal implementation 
timelines and testing schedules in collaboration with their trading 
partners to ensure readiness by the compliance date. As resources 
permit, we intend to support industry readiness through targeted 
outreach and the dissemination of educational materials, consistent 
with our role in past administrative simplification efforts. For 
example, during the ICD-10 transition, HHS collaborated closely with 
industry groups to develop technical resources, frequently asked 
questions (FAQs), and webinars. For this effort, we expect that 
industry organizations, such as WEDI and SSOs, including X12 and HL7, 
may again play a central role in developing and sharing technical 
guidance as they have with previous efforts, though we are not able to 
commit them to, or require, that. HHS's support activities, including 
education and technical assistance, are subject to resource 
availability and agency discretion, though we certainly hope to offer 
such support. Covered entities are responsible for ensuring timely 
compliance and should not rely solely on HHS-led efforts.
    Comment: Multiple commenters suggested a 36-month timeframe from 
the date the final rule is published to implement Version 6020 of the 
X12N 278 standard, while a commenter emphasized it is likely that an 
updated version of that standard will be available prior to the 
compliance date proposed in the rule and recommended that HHS adopt the 
most updated version of the standard in the final rule.
    Another commenter stated that organizations have likely begun some 
level of electronic implementation to streamline their own operations, 
and early pilots could be leveraged to accelerate conformance with the 
proposed standards. A commenter recommended that HHS consider extending 
the implementation period beyond 2 years to prevent overburden. Another 
commenter stated that while they support standardization, they would 
like additional time to develop workflows and properly implement 
standards. Other commenters recommended a subsequent 2-year voluntary 
transition period following the compliance period during which both 
current and new X12N standards would be allowed to support health IT 
developers and users. A commenter recommended that HHS engage health IT 
end users to conduct real-world testing on the proposed standards, 
including end-to-end transaction testing prior to requiring 
implementation. The commenter also recommended that health IT end users 
be involved in the implementation roadmap.
    Multiple commenters requested that HHS consider the impact of 
competing regulatory requirements when establishing the compliance 
dates. Multiple commenters expressed concern with the demands that the 
implementation of simultaneous regulatory actions places on adopters, 
health IT developers, and industry. The commenters referenced several 
regulatory requirements, including the CMS Interoperability and Prior 
Authorization proposed rule, the Advanced Explanation of Benefits 
(AEOB) requirements called for in the No Surprises Act,\31\ and the HHS 
Administrative Simplification: Modification to the NCPDP Retail 
Pharmacy Standards and Adoption of a New Pharmacy Subrogation Standard 
proposed rule (87 FR 67634). A commenter recommended implementing a 24-
month transition date for adopting Version 6020 of the X12N 278 
standard and accompanying health care attachment standard transactions 
should a compliance date be set in late 2025 or early 2026 as this 
approach would ease the weight of simultaneous implementation 
requirements of other rulemaking.
---------------------------------------------------------------------------

    \31\ H.R. 133--116th Congress (2019-2020): Consolidated 
Appropriations Act, 2021. (2020, December 27).
---------------------------------------------------------------------------

    These commenters asserted that those other regulatory requirements, 
along with those of this rule, would demand significant planning and 
resources which may compete with other priorities and operations at 
their institution. A commenter recommended that HHS partner with the 
private sector to develop a cohesive roadmap across initiatives based 
on consumer needs, maturity of standards, and required resources to 
stagger implementation and enforcement. Other commenters suggested 
staggering the requirements for this rule and those of the CMS 
Interoperability and Prior Authorization proposed rule.
    Response: We thank the commenters for their feedback and agree with 
the commenter's point that many organizations have begun some level of 
electronic implementation to streamline their own operations and likely 
can leverage those efforts to accelerate conformance with the proposed 
standards. Regarding the X12N 278 standard, as we discuss in section 
III.A. of this final rule and reiterate elsewhere, we are not 
finalizing the adoption of Version 6020 of the X12N 278 standard, 
mooting suggestions that we alter its compliance date or establish a 
transition period. Should we proceed with future X12N 278-related 
rulemaking, we would take into account the commenter's recommendations 
regarding a move to the newer version of the standard.
    With respect to those standards we are adopting, and consistent 
with section 1104(c)(3) of the Affordable Care Act, we are finalizing a 
compliance date by which covered entities must comply with the standard 
not later than 24 months after the date on which an initial standard or 
implementation specification is adopted. Some commenters suggested a 
longer compliance period, with some also recommending we include a 
voluntary transition period, but the statute provides for a 24-month 
time period.
    We recognize that meeting the required timeframe will require 
significant planning and the coordinated steps to which we refer in a 
previous response. We also acknowledge commenters' concerns regarding 
cumulative regulatory burdens, including requirements from the now-
finalized CMS Interoperability and Prior Authorization final rule. 
While this rule does not provide for staggered compliance with other 
regulations, HHS will continue to engage with parties in the health 
care industry and federal partners to support coordinated policy 
development wherever feasible.
    In response to recommendations for real-world testing and roadmap 
development, we agree that broad participation from implementers and 
end users--including small health care providers, health IT developers, 
and clearinghouses--is critical to successful adoption. We encourage 
private-sector leadership and public-private collaboration (for 
example, through WEDI, HL7, and X12) to develop implementation 
playbooks, testing frameworks, and milestone tracking tools. We also 
anticipate offering stakeholder education and support.
    We also note that many covered entities have successfully 
implemented new or modified HIPAA transaction standards within a 24-
month timeframe. We will monitor implementation

[[Page 14382]]

challenges and remain prepared to engage with interested parties as 
needed, but statutory requirements limit the compliance timeframe. 
Prompt planning and engagement by covered entities is essential to 
meeting the final compliance deadlines.
    Comment: A few commenters recommended alternative compliance start 
dates from what was proposed in the HIPAA Standards for Health Care 
Attachments proposed rule. One of these commenters recommended that 
implementation be scheduled on a date other than the end of a calendar 
year and emphasized that financial planning be performed and approved 
in advance of actual expenditure. The commenter stated that it is 
unrealistic to expect that resources can be obtained and committed to 
compliance with the proposed regulation within the current budget year, 
given that the regulation requirements would not be finalized until a 
final rule is issued. Another commenter requested a compliance 
timeframe of at least 18 months for any new regulation on this matter 
and requested that consideration be given to timeframes for state 
entities to come into compliance due to significant changes to program 
and processes. A commenter stated the compliance date should not be 
aligned with the January 1 medical enrollment period of any year to 
allow payer and provider systems sufficient time for modifications 
without impacting medical enrollments during the initial weeks of the 
new year.
    Response: We appreciate the concerns that commenters raised 
regarding the proposed compliance date. As we have repeatedly noted, 
section 1104(c)(3) of the Affordable Care Act requires a 2-year 
compliance timeframe. We recognize that implementing a new standard may 
involve significant planning and coordinated steps to which we refer to 
in a previous response, and, upon publication of this final rule, 
encourage covered entities to expeditiously begin planning to ensure 
their readiness to attain compliance in a timely manner.
    Regarding timing in relation to the calendar year and enrollment 
periods, the 24-month compliance date does not fall on January 1 of any 
year, which should help mitigate disruptions to systems and operations 
during the annual medical enrollment cycle and allow payers and 
providers to focus on system changes during less operationally 
sensitive periods.
    We are finalizing a compliance date that is 24 months after the 
effective date of this final rule, in accordance with section 
1104(c)(3) of the Affordable Care Act.
    Comment: A commenter stated that vendors will need at least 2 years 
to implement the process of updating the proposed standards and 
provided the explanation that, because XML is the standard format, time 
would be needed for training related to implementing the HL7 
transactions.
    Response: We understand this commenter to be concerned that 
additional time may be needed to comply because it will require the use 
of an HL7 implementation specification within an X12 transaction 
standard. However, we are aware that some in the industry, including at 
least one Medicare Administrative Contractor, have already successfully 
used the HL7 implementation specification within the X12 transaction 
standard, and have done so for over 15 years. This implementation 
includes publicly available companion guides and procedures, 
demonstrating that HL7 content can be effectively integrated and 
exchanged within the X12 transaction envelope, and providing a proven 
model for how HL7 documents can be used within X12 transactions. It 
also offers an early example of how vendors and clearinghouses can 
structure systems, interfaces, and workflows to support this type of 
transaction. Therefore, we believe the 24-month compliance period 
provides sufficient time for vendors and covered entities to prepare, 
test, and implement the standards adopted in this final rule.
    Final Action: After considering the public comments we received, we 
are finalizing a 24-month compliance date after the effective date of 
this final rule for the adoption of the X12N 275--Additional 
Information to Support a Health Care Claim or Encounter (06020X314) and 
X12N 277--Health Care Claim Request for Additional Information 
(006020X313), and the HL7 IG for CDA Release 2: Digital Signatures and 
Delegation of Rights, Release 1 and other HL7 IGs adopted in this final 
rule.

J. Incorporation by Reference

     This final rule incorporates by reference in Sec.  162.920 the 
following standards: (1) X12N 275--Additional Information to Support a 
Health Care Claim or Encounter (006020X314); and (2) X12N 277--Health 
Care Claim Request for Additional Information (006020X313).
    The X12N 275--Additional Information to Support a Health Care Claim 
or Encounter standard provides instructions to assist those who send 
additional supporting information or who receive additional supporting 
information to a health care claim or encounter.
    The X12N 277--Health Care Claim Request for Additional Information 
standard contains the format and establishes the data contents of the 
Health Care Information Status Notification Transaction Set for use 
within the context of an EDI environment. This transaction set can be 
used by a health care payer or authorized agent to notify a health care 
provider, recipient, or authorized agent regarding the status of a 
health care claim or encounter or to request additional information 
from the health care provider regarding a health care claim or 
encounter, health care services review, or transactions related to the 
provisions of health care.
    This rule incorporates by reference in Sec.  162.920 the following 
IGs:
     HL7 CDA R2--US Realm, Version: 2.1.0.1, September 2023 
\32\--The standard specifies the structure and data content for the 
electronic exchange of clinical documents used as attachments in 
support of healthcare administrative transactions. The implementation 
guide defines how clinical documentation structured using the HL7 
Clinical Document Architecture Release 2 and the HL7 C-CDA Release 2.1 
may be packaged and transmitted to support requests for additional 
information associated with health care claims, prior authorization 
determinations, and other administrative processes. This standard also 
supports the electronic exchange of structured clinical documentation 
between health care providers, health plans, and their authorized 
agents.
---------------------------------------------------------------------------

    \32\ This September 2023 document was issued as technical errata 
to the March 2022 document that has been referenced in an earlier 
section of this final rule, and does not contain substantive changes 
to the March 2022 specifications.
---------------------------------------------------------------------------

     HL7 IG for CDA Release 2: Consolidated CDA Templates for 
Clinical Notes (US Realm) Draft Standard for Trial Use Release 2.1, 
Volume One--Introductory Material, August 2015 with 2019 June 
Errata..--The standard provides introductory guidance and 
implementation context for the Consolidated Clinical Document 
Architecture (C-CDA) templates used to exchange structured clinical 
documents. This volume describes the overall architecture, scope, 
design principles, and conformance framework for implementing clinical 
document templates based on the HL7 Clinical Document Architecture 
Release 2. This standard also supports the interoperable exchange of 
clinical documents across health information technology systems used by 
health care providers, health information exchanges, and other 
authorized entities.

[[Page 14383]]

     HL7 IG for CDA Release 2: Consolidated CDA Templates for 
Clinical Notes (US Realm) Draft Standard for Trial Use Release 2.1, 
Volume Two--Templates and Supporting Material, June 2019--The standard 
specifies the detailed template definitions and supporting technical 
specifications for implementing Consolidated Clinical Document 
Architecture (C-CDA) clinical documents. This volume defines the 
structure, constraints, and required data elements for specific 
clinical document templates, sections, and entries used to represent 
patient clinical information using the HL7 Clinical Document 
Architecture Release 2 framework. The standard also enables health care 
providers, health information exchanges, and other authorized entities 
to create and exchange standardized clinical documents that support the 
interoperable communication of patient care information.
     HL7 IG for CDA Release 2: Digital Signatures and 
Delegation of Rights, Release 1, Draft Standard for Trial Use, October 
2014--The standard establishes specifications for representing digital 
signatures and delegation of signing authority within clinical 
documents structured using the HL7 Clinical Document Architecture 
Release 2 framework. The implementation guide defines mechanisms for 
applying digital signatures to ensure the integrity, authenticity, and 
non-repudiation of electronic clinical documents and for documenting 
circumstances in which an individual signs a document on behalf of 
another authorized party. These capabilities support the secure 
exchange and verification of electronically signed clinical 
documentation across health information technology systems.
    The materials we incorporate by reference are available to 
interested parties and can be inspected at the CMS Information Resource 
Center, 7500 Security Boulevard, Baltimore, MD 21244-1850. The X12 IGs 
are available at www.X12.org. The HL7 IGs are also available through 
the internet at www.HL7.org. A fee is charged for the X12 standards. 
Charging for such publications is consistent with the policies of other 
publishers of standards.
    Comment: A commenter requested that HHS clarify in the final rule 
that, contrary to what was stated in the proposed rule (87 FR 78453), 
HL7 does not charge a fee for the HL7 IGs.
    Response: We appreciate the commenter's request for clarification. 
In the HIPAA Standards for Health Care Attachments proposed rule, we 
incorrectly stated that a fee is charged for all IGs. HL7 primary 
standards and other selected products are licensed at no cost. It is 
important to note that the no-cost license for HL7 standards includes 
some restrictions on how the standards may be used and distributed. A 
license that allows broader use is available to people and 
organizations with an HL7 membership. For additional information, 
access their Copyright policy. The HL7 IGs are available at no fee via 
the internet at https://www.hl7.org/legal/ippolicy.cfm. By contrast, 
there is a fee for the X12 standards, which are available via the 
internet of X12 at www.X12.org.
    Final Action: After consideration of the public comments we 
received, and after consultation with the SSOs, we are finalizing the 
incorporation by reference of the standards we are adopting in this 
final rule in Sec.  162.2002 (c) through (e) and 162.920(a). We are 
also finalizing the incorporation by reference of the IGs we are 
adopting in this final rule in Sec.  162.2002(a), (b)(1), and 
162.920(e).

K. Severability

    This final rule implements requirements of HIPAA and the Affordable 
Care Act for the adoption of standards for health care claims 
attachments transactions, which will support health care claims 
transactions, and a standard for electronic signatures to be used in 
conjunction with health care claims attachments transactions.
    To the extent a court may enjoin one provision of this final rule, 
HHS intends that the other provisions should remain in effect, ensuring 
the continuity of the regulations. We intend that any provision of the 
requirements of this rule that is held to be invalid or unenforceable 
by its terms or as applied to any person or circumstance would be 
construed so as to continue to give maximum effect to the provision 
permitted by law unless such holding is one of utter invalidity or 
unenforceability, in which event we intend that the provision would be 
severable from the other finalized provisions described in this section 
and in other sections and would not affect the remainder thereof or the 
application of the provision to persons not similarly situated or to 
dissimilar circumstances.
    If any section, subsection, sentence, clause, phrase, word, 
provision or application of this final rule shall be found to be 
invalid, illegal, unconstitutional, or unenforceable, that finding 
shall not affect or undermine the validity of any other section, 
subsection, sentence, clause, phrase, word, provision, or application 
which can be enforced without the use of the offending portion of this 
final rule.

IV. Out of Scope Comments

    We received several comments on subjects that were outside the 
scope of the proposed rule. We do not directly respond to those types 
of comments because they are outside the scope of this rulemaking.

V. Collection of Information Requirements

    Under the Paperwork Reduction Act of 1995 (PRA), 44 U.S.C. 3501 
through 3520, we are required to provide notice in the Federal Register 
and solicit public comment before a collection of information 
requirement is submitted to the Office of Management and Budget (OMB) 
for review and approval. To fairly evaluate whether an information 
collection should be approved by OMB, 44 U.S.C. 3506(c)(2)(A) requires 
that we solicit comment on the following issues:
     The need for information collection and its usefulness in 
carrying out the proper functions of our agency.
     The accuracy of our estimate of the information collection 
burden.
     The quality, utility, and clarity of the information to be 
collected.
     Recommendations to minimize the information collection 
burden on the affected public, including automated collection 
techniques.
    The burden associated with the information collection requirements 
contained in Sec.  162.2002 of this document are subject to the PRA. 
The PRA package previously approved for the HIPAA health care 
transaction standards under OMB control number 098-0866 and titled: 
``CMS-R-218: HIPAA Standards for Coding Electronic Transactions'' will 
be updated to include the requirements finalized in this rule. We 
solicited but did not receive any comments on this collection of 
information.

VI. Regulatory Impact Analysis (RIA)

A. Statement of Need

    This rule finalizes the adoption of standards, in accordance with 
the HIPAA Administrative Simplification statutory provisions, for the 
electronic transmission of health care claims attachments. The health 
care industry has made it clear via testimony to the NCVHS, WEDI 
presentations, CAQH reports, public comment, National Standards Group 
(NSG) listening sessions, and direct inquiry that there is a clear need 
for the Secretary to adopt electronic transaction standards for claims 
attachments to bring consistent and reliable communication among the 
HIPAA covered entities. Because no claims attachment standard has been 
adopted, health plans, health care

[[Page 14384]]

providers, clearinghouses, and health IT vendors lack the direction 
needed to support broad use of automation in the attachment workflow or 
for the industry to coalesce around the use of even a small number of 
electronic solutions. In addition, the lack of attachment standards has 
deterred parties in the health care industry from investing in system 
implementations to automate the attachments workflow, requiring a large 
manual administrative burden for the exchange of medical documentation. 
Industry SSOs and stakeholder alliances report that automating this 
process will yield substantial labor cost savings.
    Comment: A commenter expressed concern regarding the assumptions in 
the 2019 CAQH study cited in the proposed rule, stating that the data 
in this study is questionable and based on unreasonable assumptions 
given industry experience with previous standards, and that HHS cannot 
justify that the net benefits of adopting health care attachment 
standards will outweigh the costs to health care providers. The 
commenter also stated that the cost savings to the industry cited in 
the proposed rule do not account for the added cost of implementing 
both FHIR (pursuant to CMS rulemaking) and X12 updates during the same 
24-month period, the ability to convert each to the other, 
clearinghouse costs, and ongoing maintenance of each. A commenter 
stated that health care claims cannot be separated from corresponding 
appeal transactions, and that the savings cited are unlikely to be 
realized unless appeal attachment standards are adopted.
    Response: The commenters did not provide alternative data sources 
or analyses for our further consideration, and we note that our RIA in 
the HIPAA Standards for Health Care Attachments proposed rule involved 
a thorough analysis utilizing multiple sources. As reiterated at the 
beginning of this section, this analysis was informed by our assessment 
that considered the current environment, industry testimony to the 
NCVHS, WEDI whitepapers, CAQH studies, survey results produced by 
industry consensus-based organizations, and updated web-based research 
on specific topics.
    For purposes of this final rule, we have updated data and 
calculations based on the 2024 CAQH Index report, focusing on health 
care claims attachments.\33\ The RIAs included in the HIPAA Standards 
for Health Care Attachments proposed rule and the Modifications final 
rule, in addition to the CAQH Index Reports cited throughout this RIA, 
only provide an estimate of the direct costs of implementation and 
automation; appeals were not estimated, presumably because appeals data 
are difficult to obtain. We note that this final rule applies only to 
what is being adopted, which are health care claims attachments 
transaction standards. We may address other transactions, including the 
use of a prior authorization transaction standard in health care 
attachments, in other rulemaking.
---------------------------------------------------------------------------

    \33\ The Council for Affordable Quality Healthcare, Inc. (n.d.). 
2024 CAQH Index Report. Retrieved from https://www.caqh.org/hubfs/Index/2024%20Index%20Report/CAQH_IndexReport_2024_FINAL.pdf.
---------------------------------------------------------------------------

    The claims attachment transaction standards adopted in this final 
rule cover the transmission of solicited and unsolicited attachments 
related to various stages of the claims payment process, including 
post-payment review activities, but do not extend to attachments used 
in claims appeal processes. Costs to implement a FHIR standard fall 
outside of the scope of this final rule.

B. Overall Impact

    We have examined the impacts of this rule as required by Executive 
Order (E.O.) 12866, ``Regulatory Planning and Review''; E.O. 13132, 
``Federalism''; E.O. 13563, ``Improving Regulation and Regulatory 
Review''; E.O. 14192, ``Unleashing Prosperity Through Deregulation''; 
the Regulatory Flexibility Act (RFA) (Pub. L. 96-354); section 1102(b) 
of the Social Security Act; section 202 of the Unfunded Mandates Reform 
Act of 1995 (UMRA) (Pub. L. 104-4); and Subtitle E of the Small 
Business Regulatory Enforcement Fairness Act of 1996 (the Congressional 
Review Act) (5 U.S.C. 804(2)).
    E.O.s 12866 and 13563 direct agencies to assess all costs and 
benefits of available regulatory alternatives and, if regulation is 
necessary, to select those regulatory approaches that maximize net 
benefits, including: (1) potential economic, environmental, public 
health and safety, and other advantages; (2) distributive impacts; and 
(3) equity. Section 3(f) of E.O. 12866 defines a ``significant 
regulatory action'' as any regulatory action that is likely to result 
in a rule that may: (1) have an annual effect on the economy of $100 
million or more or adversely affect in a material way the economy, a 
sector of the economy, productivity, competition, jobs, the 
environment, public health or safety, or State, local, or tribal 
governments or communities; (2) create a serious inconsistency or 
otherwise interfere with an action taken or planned by another agency; 
(3) materially alter the budgetary impact of entitlements, grants, user 
fees, or loan programs or the rights and obligations of recipients 
thereof; or (4) raise novel legal or policy issues arising out of legal 
mandates, or the President's priorities.
    An RIA must be prepared for a regulatory action that is significant 
under section 3(f)(1) of E.O. 12866. Based on our estimates, the Office 
of Information and Regulatory Affairs (OIRA) has determined this 
rulemaking is significant under section 3(f)(1). In accordance with 
Subtitle E of the Congressional Review Act, OIRA has also determined 
that is a ``major rule'' as defined by 5 U.S.C. 804(2).
    We believe that covered entities have already largely invested in 
the hardware, software, and connectivity standards being adopted in 
this final rule. We anticipate that the adoption of these changes will 
result in costs, but that those costs will be outweighed by the 
benefits that these changes will yield. Accordingly, we have prepared 
an RIA that, to the best of our ability, presents the costs and 
benefits of this final rule.

C. Detailed Economic Analysis

1. Anticipated Effects
    The objective of this RIA is to summarize the costs and benefits of 
adopting new and modified standards for the exchange of health care 
claims attachment information consisting of the following provisions:
     A code set to be used for health care claims attachments 
transactions.
     X12 standards for requesting and transmitting attachment 
information and HL7 standards for clinical information content.
     Electronic signatures standards.
    This portion of the analysis is informed by an earlier 
environmental scan produced for us in 2016 by the MITRE Corporation, a 
Federally funded research and development center. Data from that 
environmental scan was used since it was conducted to help develop the 
HIPAA Standards for Health Care Attachments proposed rule. However, we 
did not solely rely on the MITRE report. Additional data was obtained 
through industry testimony to the NCVHS, whitepapers, WEDI survey 
results, and updated web-based research on specific topics.\34\ Since 
we did not receive any comments on the assumptions we made based on the 
2016 MITRE Corporation environmental

[[Page 14385]]

scan, we continue to reference it in this final rule.
---------------------------------------------------------------------------

    \34\ Guidance on Implementation of Standard Electronic 
Attachments for Healthcare Transactions November 2017 Workgroup for 
Electronic Data Interchange. Retrieved from https://www.wedi.org/2017/11/17/guidance-on-implementation-of-standard-electronic-attachments-for-healthcare-transactions/.
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    Consistent with statutory and regulatory requirements, any 
recommendations for the adoption of HIPAA standard updates are the 
outcome of an extensive, consensus-driven process that is open to all 
interested parties. The standards development process involves direct, 
participatory input from representatives of parties in the health care 
industry that are required to utilize the transactions. Both the 
standards adoption process and standards development processes are 
described in detail in section II. of this final rule.
    For purposes of this analysis, we use the segmentation of parties 
in the health care industry laid out in the Modifications final rule, 
with some additional details on vendors supporting the integration of 
the administrative and clinical data. As discussed in the HIPAA 
Standards for Health Care Attachments proposed rule, and again in this 
final rule, health care providers and payers continue to use manual 
processing for health care attachments, therefore, these interested 
parties are relevant for purposes of this RIA because there is no 
adopted health care claims attachments standard. As noted in the most 
recent WEDI white paper, most payers send hard copy letters to request 
additional information to support a claim or prior authorization 
submitted by the health care provider.\35\ These segments consist of 
the following:
---------------------------------------------------------------------------

    \35\ Guidance on Implementation of Standard Electronic 
Attachments for Healthcare Transactions November 2017 Workgroup for 
Electronic Data Interchange. Retrieved from https://www.wedi.org/2017/11/17/guidance-on-implementation-of-standard-electronic-attachments-for-healthcare-transactions/.

 Health Care Providers
++ Hospitals
++ Physicians
++ Dentists
++ Pharmacies
 Health Plans
++ Private Health Plans and Issuers
++ Government Health Plans: Medicare, Medicaid, and Veterans 
Administration
 Clearinghouses
 Vendors
++ Practice Management System (PMS) Vendors
++ EHR Vendors

    In analyzing the effects of the proposed rule, we referenced the 
2019 and 2020 CAQH Index Reports issued on January 21, 2020 and 
February 3, 2021, respectively.36 37 However, for this final 
rule, we are making reference to the 2024 CAQH Index Report.\38\ The 
2024 CAQH Index tracks adoption of HIPAA-mandated- and other electronic 
administrative transactions and measures progress related to reducing 
the costs and burden associated with administrative transactions 
exchanged across the medical and dental industries. The CAQH Index 
includes estimates of the number of annual transactions by submission 
mode (that is, phone, fax, mail, or email), electronic (that is, HIPAA 
standard) or partially electronic (that is, web portals or interactive 
voice response), as well as estimates of the associated labor cost and 
staff time. The reported costs and savings account for the labor time 
required to conduct transactions, not the time and cost associated with 
gathering information or the costs associated with the use of 
clearinghouses or third-party vendors.
---------------------------------------------------------------------------

    \36\ The Council for Affordable Quality Healthcare, Inc. (n.d.). 
2019 CAQH Index Report. Retrieved from https://www.caqh.org/sites/default/files/explorations/index/report/2019-caqh-index.pdf.
    \37\ The Council for Affordable Quality Healthcare, Inc. (n.d.). 
2020 CAQH Index Report. Retrieved from https://www.caqh.org/hubfs/43908627/drupal/explorations/index/2020-caqh-index.pdf.
    \38\ The Council for Affordable Quality Healthcare, Inc. (n.d.). 
2024 CAQH Index Report. Retrieved from https://www.caqh.org/hubfs/Index/2024%20Index%20Report/CAQH_IndexReport_2024_FINAL.pdf.
---------------------------------------------------------------------------

    With respect to the category of health care providers, the report 
does not provide a breakdown of the types of providers that contributed 
to the survey results, but it does distinguish between medical and 
dental providers and acknowledges partnering with both physician and 
hospital member organizations. Thus, we believe the medical providers' 
savings reported include hospital-related responses.
    In contrast to the data on labor cost savings, we continue to be 
unaware of any reports or other industry estimates on the level of 
additional investments needed to fully implement these electronic 
processes for requesting and submitting attachment information, or the 
proportion of such costs that might be passed on to health care 
providers or health plan firms. By reviewing testimony submitted to the 
NCVHS and conducting web searches, such as for plan, clearinghouse, and 
vendor EDI instructions and services, we understand some interested 
parties' segments have already largely built or acquired the capacity 
to implement these proposals (albeit possibly in inconsistent and 
proprietary ways in the absence of federal standards). Similarly, based 
on the NCVHS testimony, others (particularly health care providers and 
their vendors) have partially implemented the standards.\39\ Thus, we 
conclude that implementation and readiness to fully implement the 
standards being adopted in this final rule will vary among and within 
covered entity industry segments.
---------------------------------------------------------------------------

    \39\ NCVHS Letter to the Secretary of HHS on Recommendations for 
the Electronic Health Care Attachment Standard, July 5, 2016. 
Retrieved from https://ncvhs.hhs.gov/wp-content/uploads/2018/03/2016-Ltr-Attachments-July-1-Final-Chair-CLEAN-for-Submission-Publication.pdf.
---------------------------------------------------------------------------

    We also believe it is likely that firms directly involved in 
deploying additional capacity, particularly in upgrading PMS or EHR 
functionality, will not voluntarily share proprietary and competitive 
market-sensitive data on the level of additional investment needed, or 
on the effects on customer fees. Therefore, as further explained in the 
discussion of cost calculations, we estimate the incremental costs 
involved not through projected cost build-up, but rather as a function 
of the level of impact of implementing the previous HIPAA-standard 
modifications. We solicited comments on this approach and on the 
appropriateness of the aggregate level estimates, preferably seeking 
data reflecting estimated changes to firm-specific costs and customer-
specific fees in a manner that facilitated aggregation, but we received 
no response or comments.
    We expect that the regulatory requirements, combined with the 
administrative cost savings opportunities identified by CAQH, will 
result in broad adoption of these attachment standards. The remainder 
of this section provides details supporting the cost-benefit analysis 
for the provisions being finalized.
2. Affected Entities
    As with previous HIPAA standards updates, all HIPAA covered 
entities will be affected by this final rule. Covered entities include 
all health plans, all health care clearinghouses, and health care 
providers that transmit health information in electronic form in 
connection with a transaction for which the Secretary has adopted a 
standard. Therefore, these covered entities will be required to use 
these standards for transactions that they conduct electronically. See 
the Transactions and Code Sets final rule for a discussion of affected 
entities (65 FR 50361).
    In general, covered entities (or their vendors) will incur a number 
of one-time costs to implement the new transactions in this final rule. 
These costs likely will include analysis of business flow changes, 
software procurement or customized software development, integration of 
new software into existing provider/vendor systems, staff training, and 
collection of

[[Page 14386]]

new data, testing, and transition processes. For some entities, new 
vendors may be needed to create and validate the clinical documentation 
to be embedded in the attachment transactions. System implementation 
costs will account for most of the costs, with system testing alone 
likely accounting for a majority of costs for all covered entities. 
Ongoing operational costs will be expected to initially grow, as the 
implementation of electronic processes run in parallel with ongoing 
manual and partially automated processes, but will then be expected to 
decline as higher proportions of transactions are automated. These 
health IT-related costs will be offset by significant reductions in 
labor costs for what are, today, largely manual processes to locate, 
collect, package, and mail clinical records needed to support requests 
for additional documentation to support claims. Other offsetting cost 
savings are expected from lower postage and other mailing costs, 
reductions in reprocessing volume due to higher clean claim acceptance 
rates, and delay in receiving payment.40 41
---------------------------------------------------------------------------

    \40\ NCVHS Letter to the Secretary of HHS on Recommendations for 
the Electronic Health Care Attachment Standard, July 5, 2016. 
Retrieved from https://ncvhs.hhs.gov/wp-content/uploads/2018/03/2016-Ltr-Attachments-July-1-Final-Chair-CLEAN-for-Submission-Publication.pdf.
    \41\ In an RIA that, in accordance with OMB Circular A-4, takes 
a society-wide perspective, changes in timing of payments represent 
a transfer, rather than a net societal cost savings.
---------------------------------------------------------------------------

    It is likely that there are significant differences in readiness 
among payer and provider claims health IT systems, and we do not know 
the extent of incremental costs associated with health IT development, 
enablement (that is, upgrade or licensing fees paid by users), or 
workflow adjustment and training to facilitate compliance with the 
standards adopted in this final rule. So, though we are aware that the 
net benefits will likely vary among interested parties, we continue to 
lack the data to estimate these differential effects. An important 
consideration reflected in various industry testimonies submitted to 
the NCVHS is that some interested parties, particularly smaller health 
care providers, will continue to have the option to leverage existing 
clearinghouses to provide these information exchange services based on 
negotiated rates. This is a standard practice today, where 
clearinghouses already manage 85 percent of the conversion of paper-to-
electronic formats, as well as reformatting of non-compliant to 
compliant electronic claim transactions for the industry. Given the 
high costs of manual and partially electronic means for exchanging 
required information, we believe this rule's implementation will yield 
significant net industry savings. However, the level and timing of 
uptake (as opposed to the retention of manual processes and 
clearinghouse intermediation) by provider entities is uncertain. We 
reflect this uncertainty with both the phasing in and estimation of 
minimums and maximums for costs and benefits. We solicited comments in 
the proposed rule on our RIA approach and assumptions.
    Comment: Multiple commenters provided descriptions of additional 
burdens that covered entities would experience by implementing the 
policies as proposed. A commenter noted that California's Medicaid 
Management Information Systems Operations will have to include new 
training for call center agents and providers, new call scripts, and 
possible changes to the provider manuals. Another commenter stated that 
additional storage will present states with increased and expanding 
costs, as Medicaid programs are not allowed to charge fees for 
administering programs. Another commenter noted that there are other 
impacts that must be considered when assessing the proposals outlined 
in the proposed rule. The commenter provided several examples of 
operational processes, workflow changes, education and training, and 
additional work their institution would need to complete in order to 
comply with the proposed rule.
    Response: We thank commenters for their feedback. Our estimates 
took into consideration business flow changes, software procurement or 
customized software development, integration of new software into 
existing provider/vendor systems, staff training, and collection of new 
data, testing, and transition processes, and we noted previously that 
some covered entities may require new vendors to create and validate 
the clinical documentation to be embedded in the attachments 
transactions. Our systems implementation costs account for most of the 
costs, with system testing alone likely to account for many costs 
estimated for all covered entities. Finally, regarding the concern 
raised about the potential for states to incur additional costs, such 
as administrative costs to operate the program, we encourage states to 
work, as appropriate, with CMS's Center for Medicaid and CHIP Services 
(CMCS) to determine if Federal Financial Participation (FFP) is 
available for state administrative costs.
    Comment: A commenter stated that HHS underestimated the economic 
impact of this rule on all entities and expressed concern regarding the 
cost of using HIPAA transaction standards without widespread adoption. 
The commenter called out HHS's acknowledgement of those health plans 
that do not use automation in working with medical record documentation 
as part of their prior authorization request and claim adjudication 
processes, with the major concern being that these plans will not 
invest in the attachment standards systems and will continue to use 
manual processes. The commenter therefore recommended that HHS require 
that health plans invest in automation to mitigate manual processes. 
Based on their prior experience with the transaction modifications 
required by Version 5010 standard implementation and ICD-10 
implementation, another commenter similarly stated that HHS 
significantly underestimated the costs to conform to the proposed 
requirements. The commenter also expressed that HHS's assumptions were 
erroneous and that the X12N 275 claims standard and Version 6020 of 
other transaction standards would create new implementation, revision, 
and support costs for states. Another commenter stated that savings 
would not be realized if payers do not also invest in systems to 
eliminate manual processes to interpret documentation submitted via the 
transactions.
    Response: The commenters who stated that we underestimated the 
rules' costs offered no substantive data or additional information to 
counter our analysis. We further explain here our analysis, including 
some insignificant changes--such as updating the current year labor 
statistics and the use of the most recent CAQH index--that we made with 
respect to costs and benefits detailed in this final rule. Also, as 
discussed in section III.A. of this final rule and elsewhere, since we 
are not finalizing the proposal to adopt a modification to the prior 
authorization transaction standard, we do not reflect those 
calculations in this RIA. In sum, we made significant efforts to ensure 
the accuracy of the costs and benefits presented in this final rule.
    The analysis included in the HIPAA Standards for Health Care 
Attachments proposed rule was based on the analysis performed in the 
Modifications final rule (74 FR 3296). The analysis was also updated 
for inflation through the use of various CAQH reports. Based on the 
estimates in the HIPAA Standards for Health Care Attachments proposed 
rule, the inflation data were adjusted using the 2000 to 2025 Consumer 
Price Index

[[Page 14387]]

(CPI).\42\ When preparing the proposed rule, although later CAQH Index 
reports were available, we chose to use the 2019 report because we 
believed, at that time, the estimates based on the period during the 
COVID-19 public health emergency (PHE) years would have resulted in 
overestimates and not be relevant to future years. We now have the CAQH 
2024 report, which indeed confirms several downward trends, confirming 
that the impact from the COVID-19 PHE has stabilized. Therefore, for 
the purposes of this final rule, we further updated the estimates by a 
factor of 23 percent, which represents a percentage increase consistent 
with both inflation and the CAQH report. More specifically, using the 
most recent CPI data and updating to the CAQH 2024 report (the latest 
full year), we find that an additional 23 percent must be added to 
account for inflation.
---------------------------------------------------------------------------

    \42\ U.S. Inflation Calculator. (n.d.). Current U.S. Inflation 
Rates: 2000-2026. Retrieved from https://
www.usinflationcalculator.com/inflation/current-inflation-rates/
#:~:text=To%20find%20annual%20inflation%20rates,rate%20in%202023%20wa
s%203.4%25.
---------------------------------------------------------------------------

    In the proposed rule, we stated that we utilized the CAQH national 
annual savings estimates as the basis for our cost estimates. The CAQH 
national annual savings estimates were calculated based on the 
potential savings achieved by the industry when transitioning from a 
reported state of 22 percent electronic processing for attachments to 
fully electronic processing. The potential cost savings by the industry 
are based on the premise of cost decreases as industry adoption 
increases. Although there have been previous apparent increases in 
electronic processing of health care attachments, we do not trend the 
benefits estimates forward because previously reported estimates of 
electronic processing adoption have tended to remain stable over a 
longer period. Because we believe that some portion of providers and 
their vendors may take longer to move from manual to fully automated 
transactions, we also assume a phased-in realization of the level of 
annual benefits projected by CAQH. For the purposes of this analysis, 
we generally estimate that most interested parties will realize the 
benefits in labor savings over a 3-year period at the rate of 50 
percent in the first operational year, 75 percent in the second 
operational year, and 100 percent in and after the third year after the 
compliance date. We did not elect to require that health plans invest 
in automation because, with respect to the level and timing of the 
uptake of these standards, we assume that some portion of providers and 
their vendors may take longer to move from manual to fully automated 
transactions and that could potentially cause additional financial 
burden for some. Our analysis is summarized in Tables 6 and 7, which 
included multiple sources for estimation of minimum and maximums for 
costs and benefits and thereby accounted for the uncertainty around 
certain providers choosing to retain manual processes.
    We are finalizing the RIA with the revisions described in the 
previous response. As this final rule will apply only to health care 
claims attachments transactions, the RIA does not include the prior 
authorization transaction as initially proposed.
3. Explanation of Cost Calculations
    Based on consultation with industry workgroups, such as WEDI, we 
determined that the health care claims attachments standards adopted in 
this final rule are already in common use by entities engaged in other 
lines of business that exchange medical records (for example, the 
workers' compensation and liability insurance fields). Thus, there is 
clear evidence that the standards are fit for their intended purpose 
and have been successfully implemented in closely related business 
processes.
    Although the claims attachments standards we are finalizing 
adoption of are initial standards, as described in section 1175 of the 
Act, health plans surveyed by CAQH in 2024 reported electronic 
transaction submission levels of 32 percent for attachments. Therefore, 
although we had not adopted the specification for attachments requests 
by the health plan (X12N 277 standard for claims transactions) and the 
response from the provider (X12N 275 standard for claims transactions) 
as HIPAA standards, some payer and provider systems already exchange 
electronic attachments using the standards we are finalizing adoption 
of in this rule. Moreover, HL7 C-CDA standards have been widely adopted 
by health IT developers participating in the ONC Health IT 
Certification Program; these standards are incorporated into 
certification criteria that are part of the definition of a Base EHR in 
45 CFR 170.102. According to the latest available posted data, as of 
2021, nearly 4 in 5 (80 percent) office-based physicians had adopted a 
certified EHR.\43\
---------------------------------------------------------------------------

    \43\ ASTP/ONC HealthIT.gov. (n.d.). Office-based Physician 
Electronic Health Record Adoption. Retrieved from https://www.healthit.gov/data/quickstats/national-trends-hospital-and-physician-adoption-electronic-health-records.
---------------------------------------------------------------------------

    Similarly, while the standards we are adopting for electronic 
signatures are also initial standards, they incorporate practices 
already implemented in health-care related reporting and monitoring 
systems. We anticipate that leveraging existing industry experience 
will limit incremental implementation costs for providers. At the same 
time, HHS continues to evaluate other electronic signature models for 
potential applicability to other HIPAA transactions or broader 
alignment across federal programs.
    Given that some parts of the health care industry have experience 
implementing requirements similar to the standards that we are adopting 
in this final rule, we believe implementing these standards will be 
more similar to implementing standard modifications than to 
implementing transaction standards for the first time. Therefore, we 
anchor our cost estimates on the final cost estimates included in the 
Modifications final rule (74 FR 3322), updated for inflation, and then 
make certain adjustments to address unique aspects of certain industry 
segments.\44\ While the systems required for implementing the 
specifications being adopted in this final rule have been continuously 
updated since the publication of the Modifications final rule, the 
technologies within the implementation specifications in this final 
rule are of the same type as those considered there and will be 
integrated into systems that continue to utilize similar business 
models.
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    \44\ Cost estimate ranges from the January 2009 Modifications 
final rule were adjusted for inflation using the Bureau of Labor 
Statistics Consumer Price Index Inflation Calculator, to reflect 
amounts for January 2020 and round up to the nearest whole number to 
match benefits estimates from the CAQH 2020 Index. Retrieved from 
https://www.bls.gov/data/inflation_calculator.htm.
---------------------------------------------------------------------------

    The cost estimates in the Modifications final rule were based on an 
estimate of the total costs to implement the initial HIPAA transaction 
standards (Version 4010/4010A) and informed by industry interviews.\45\ 
To determine the costs for each provider sub-segment (that is, 
hospitals, clinicians, and dentists), we established an estimate for 
what the total approximate Version 4010/4010A costs were for an 
individual entity within that sub-segment (based on the interviews and 
other data available through research) and then applied an estimated 
range of 20 to 40 percent of those costs to come up with estimated 
minimum and maximum costs for

[[Page 14388]]

Version 5010. As discussed in the Modifications final rule, the 
baseline range of 20 to 40 percent was accepted as a realistic proxy by 
the providers and plans that participated in the earlier interviews 
conducted to develop the regulatory cost benefit analysis (74 FR 3315). 
The purpose of those interviews was to identify more granular cost 
categories. It is important to note that through subsequent regulatory 
actions, we have solicited comments on our baseline ranges to aid in 
analyzing and validating overall cost estimates ranges by entity. Since 
we did not receive any comments on our estimated ranges, we continue to 
use the estimated range of 20 to 40 percent. For the purposes of this 
final rule, the estimated cost for each individual entity within a 
segment was then multiplied by the number of entities to establish the 
estimated costs for the entire segment.
---------------------------------------------------------------------------

    \45\ Version 5010 Regulatory Impact Analysis-Supplement. 
September 2008. Retrieved from https://www.cms.gov/files/document/5010regulatoryimpactanalysissupplementpdf.
---------------------------------------------------------------------------

    With respect to the level and timing of the uptake of these 
standards, we assume that some portion of providers and their vendors 
may take longer to move from manual to fully automated transactions. 
For purposes of this analysis, we generally estimate that most 
interested parties will incur costs over a 4-year period at the rate of 
50 percent in the first implementation year, 30 percent in the second 
implementation year, and 10 percent each in the third and fourth years. 
We developed this 4-year model based on feedback from industry 
interviews and historical data from prior standard transitions (for 
example, Version 4010 to 5010). Providers and vendors consistently 
shared that the largest investments are made in the first 2 years, with 
a gradual tapering off in the final 2 years. It also provides a 
structured approach to ensure that providers and vendors can manage 
costs and resources effectively, while gradually scaling up their 
automation efforts. We maintain these estimates for full implementation 
in this final rule.
    We note that although many commenters on the Modifications final 
rule suggested that we underestimated the costs, commenters then 
provided no substantive data or additional information to counter our 
analysis. We are not aware of more recent public research relating to 
the costs of implementing modifications to HIPAA transaction standards. 
We invited public comments on our understanding and requested any 
available additional data to help us determine the costs of 
implementing modifications to HIPAA transaction standards more 
accurately.
    Comment: A commenter stated that significant resources will be 
necessary to implement the rule's requirements and believed that those 
costs are missing from the RIA estimates. The commenter listed the 
following: (1) familiarization with the final rule; (2) requirements 
definition; (3) specification documentation; (4) system and procedures 
modification; (5) unit-string-system-UAT-Partner-E2E and B2B testing; 
(6) software deployment; (7) companion guide, instruction manual, and 
testing instruction updates; (8) website deployment; (9) outreach; (10) 
trading partner coordination; and (11) preparation of educational and 
notification materials.
    Response: We thank the commenter for their feedback, but note the 
commenter offered no substantive data for our consideration, so we 
retain our analysis as is. We also reiterate, as we stated previously, 
that: (1) we included in our estimates consideration of business flow 
changes, software procurement or customized software development, 
integration of new software into existing provider/vendor systems, 
staff training, and collection of new data, testing, and transition 
processes; (2) for some covered entities, new vendors may be needed for 
the creation and validation of the clinical documentation to be 
embedded in the attachment transactions; and (3) our systems 
implementation costs considerations account for most of the costs, with 
system testing alone likely accounting for a majority of costs 
estimated for all covered entities.
    Comment: A commenter noted HHS's assertion that entities have 
already largely invested in resources to conduct the proposed new and 
modified standards is untrue with respect to long-term and post-acute 
care (LT-PAC) providers that were excluded from the Health Information 
Technology for Economic and Clinical Health (HITECH) Act. The commenter 
also noted that the full benefits of these proposed regulations will 
likely not be realized by a significant number of resource-constrained 
LT-PAC providers.
    Response: Although LT-PAC providers were not included in the HITECH 
Act, the X12 EDI transactions for health care claims attachments 
adopted in this final rule are not part of CMS's Meaningful Use or 
Promoting Interoperability programs, nor are those incentive programs 
relevant to the transactions addressed in this analysis. However, we 
believe that LT-PAC providers, like HIPAA covered entities, are likely 
to have the technical infrastructure or vendors in place to support 
development for the exchange of HIPAA mandated transactions and should 
be able to update those systems to accommodate attachments for claims. 
Should we learn that LT-PAC providers are lagging with full compliance 
with the requirements of this final rule, as resources permit, HHS will 
work with that industry segment.
4. Explanation of Benefits Calculations
    To determine the benefits for each segment of the industry, we 
primarily relied upon the 2024 CAQH Index report. Based on survey 
responses, CAQH estimates that spending on labor time conducting 
attachment transactions accounts for about $590 million of spending on 
administrative transactions across the medical industry, with health 
care providers incurring about 88 percent of this, spending at an 
average cost of $6.30 for each manually processed attachment. CAQH 
estimates that moving from manual to electronic attachments 
transactions could save the health care industry $1.65 on average per 
transaction. These estimated savings would be split between health care 
providers and health plans and would be generated by the avoidance of 8 
minutes in administrative labor time per attachment on average, as 
medical providers reported taking an average of 11 minutes to submit an 
attachment manually versus 3 minutes electronically. Comparable data on 
spending and savings opportunities on attachment transactions for 
dental providers were not available, although the survey reports that 
only 37 percent of dental attachment transactions in 2024 were fully 
electronic.
    We utilized the 2024 CAQH national annual savings estimates as the 
basis for our benefits estimates. The CAQH national annual savings 
estimates are calculated based on potential savings moving from the 
reported state of 32 percent electronic processing for attachments to 
fully electronic processing. The total potential industry cost savings 
opportunity is an amount that decreases as industry adoption increases. 
Although there was an apparent increase in electronic processing of 
health care attachments transactions from 2020 to 2024, we do not trend 
the benefits estimates forward because previously reported estimates of 
electronic processing adoption have tended to remain stable over a 
longer period of time. The CAQH estimation methodology only includes 
labor time savings, which it assesses to be, by far, the most 
significant component of savings. We do not include estimates of other 
sources of savings, such as through the elimination of mailing costs, 
so our benefit estimates may have a tendency toward understating actual

[[Page 14389]]

industry savings.\46\ Because we believe that some portion of health 
care providers and their vendors may take longer to move from manual to 
fully automated transactions, we also assume a phased-in realization of 
the level of annual benefits projected by CAQH. For purposes of this 
analysis, we generally estimate that most interested parties will 
realize the benefits in labor savings over a 3-year period at the rate 
of 50 percent in the first operational year, 75 percent in the second 
operational year, and 100 percent in and after the third year after the 
compliance date. The 3-year implementation timeline was chosen based on 
a combination of industry experience, realistic adoption timelines, and 
the desire to maintain consistency between implementation costs and 
savings. Past health care regulations often assumed multi-year 
implementation timelines to allow for adequate industry readiness. This 
3-year timeline likely reflects lessons learned from prior transitions, 
where full compliance was phased in over a similar period. This 
approach also ensures that both costs and benefits are realized in a 
way that reflects typical patterns of adoption, while allowing for a 
gradual transition and adjustment period for interested parties in the 
health care industry.
---------------------------------------------------------------------------

    \46\ On the other hand, CAQH developed estimates from the 
experience of entities that voluntarily automated, and extrapolation 
from such voluntary experience to the regulatory context may 
generate a tendency toward overestimation of savings, on a per-unit 
basis and/or in the aggregate. We welcomed comments that would have 
facilitated refinement of estimates.
---------------------------------------------------------------------------

    Comment: A commenter underscored the benefits in using electronic 
authorizations such as time savings, financial savings, and a decrease 
in denials due to fewer administrative denials. Another commenter 
agreed with the time estimations regarding the submission of paper 
records versus electronic records. The commenter noted that some 
analyses of savings, such as those conducted by WEDI, do not explore 
the impact on private practice physical therapists. The commenter 
further noted that savings realized through implementation of the 
proposals would be split between health care providers and health plans 
but stated it is imperative that savings are split among those who 
actually provide care and not the insurance companies which can often 
stand in the way of paying for the provision of care.
    Response: We thank the commenters for their feedback. The analysis 
included in this final rule addresses three types of providers: (1) 
clinicians; (2) hospitals; and (3) dentists. While further 
differentiation among each group is possible, the assumption is that 
the overall averages for each group capture the relevant utilization 
patterns for each of its subgroups, and we believe that further 
granularity, if the data existed, would not provide significantly 
different numbers. Private practice physical therapists are included in 
the group of clinicians. The commenters requesting a separate analysis 
for this group did not indicate its uniqueness, nor why the overall 
average for doctors does not suffice.
5. Costs and Benefits Determination for Each Industry
a. Hospitals
    As previously discussed in the HIPAA Standards for Health Care 
Attachments proposed rule, to determine the costs for each health care 
provider sub-segment, we started with the minimum and maximum cost 
estimates included in the Modifications final rule for each type of 
entity. For hospitals, those estimates were within a range of $1,423 
million to $2,848 million, adjusted for inflation (74 FR 3316). We 
further assume that hospital health IT developers will incur these 
costs, absorbing some portion of the costs as a cost of doing business 
incorporated in the current level of health IT service and maintenance 
agreements and passing some portion of the costs on to the hospital in 
the form of higher fees for enabling new functionality. This seems 
reasonable given our understanding that health IT vendors generally 
plan on, and finance, a certain level of ongoing system development 
through ongoing maintenance agreements, typically with annual 
increases, but also must keep these at a level that remains competitive 
in their niche market.\47\ In other words, not all possible systems 
upgrades will be factored into current fees. We continue to have no 
information on how this allocation will be made and expect there will 
be many variations in practice, but, for purposes of this analysis, we 
again assume a 60/40 estimated cost split, with the vendor bearing 60 
percent of the implementation costs and passing the remaining 40 
percent on to the customer. In the HIPAA Standards for Health Care 
Attachments proposed rule, the cost estimates for hospitals were based 
on a range of costs from the Modifications final rule, adjusted for 
inflation, and costs were split between vendors and hospitals using 
that 60/40 estimated cost split, which is in line with industry 
practices. The 2024 CAQH report offers no information to alter this 
hospital/vendor cost distribution, and we continue to believe that a 
60/40 split ensures that implementation costs and savings realizations 
are accounted for in a way that reflects the cost structure of health 
care.
---------------------------------------------------------------------------

    \47\ Pratt, M. (2018, May 30). The true cost of switching EHRs. 
Medical Economics Journal, 96(10). Retrieved from https://www.medicaleconomics.com/view/true-cost-switching-ehrs.
---------------------------------------------------------------------------

    As summarized in Table 1, this assumption results in the hospital 
share of costs to be in the range of $569 million to $1,139 million, 
with the remainder, in the range of $854 million to $1,709 million, to 
be borne by hospital health IT vendors.
[GRAPHIC] [TIFF OMITTED] TR24MR26.000


[[Page 14390]]


    To determine the benefits for hospitals, as discussed in the HIPAA 
Standards for Health Care Attachments proposed rule, we refer to the 
estimates of savings for medical providers reported by CAQH and assume 
that hospitals will achieve 20 percent of these savings (87 FR 78462). 
We continue to assume a rough 80/20 split between clinicians and 
hospitals because we believe the majority of health care claims 
attachments transactions will come from clinician practices, since 
plans and hospitals generally have other payment requirements for more 
expensive inpatient admissions and outpatient procedures, such that 
claims attachments would be required less frequently. So, we estimate 
the hospital share to be 20 percent of $650 million, or $130 million. 
To reflect the uncertainty around the ultimate level of uptake of these 
standards, we estimate a range of 25 percent below this point estimate 
between $98 million to $130 million in annual savings, as summarized in 
Table 2.
[GRAPHIC] [TIFF OMITTED] TR24MR26.001

    With respect to timing of costs and benefits, we assume hospitals 
will have both the capital and business interest to move promptly to 
achieve the return on investment and will incur all costs during the 2-
year implementation period, which is the timing for HIPAA covered 
entities to use the adopted standard. Hospitals will realize the full 
level of annual savings in and after the first operational year 
following the proposed compliance date, as summarized in Tables 5 and 
6.
b. Clinicians
    As discussed in the HIPAA Standards for Health Care Attachments 
proposed rule (87 FR 784622), we continue to follow the same 
methodology for estimating clinician costs and benefits as used in the 
Modifications final rule (74 FR 3316). For clinicians, in both rules, 
these cost estimates were within a range of $665 million to $1,329 
million, adjusted for inflation (74 FR 3317). We assume a comparable 
level of effort to implement the health care claims attachments 
standards being adopted in this final rule. We further assume that 
clinician practice PMS and EHR vendors will incur these costs, 
absorbing some portion of the costs as a cost of doing business 
incorporated in the current level of health IT service and maintenance 
agreements and passing some portion of the costs on to the practices in 
the form of higher fees for enabling new functionality. We again assume 
a 60/40 estimated cost split, with the vendor bearing 60 percent of the 
implementation costs and passing the remaining 40 percent on to the 
customer. As summarized in Table 1, this results in a clinician share 
of costs in the range of $266 million to $532 million, with the 
remainder in the range of $399 million to $797 million to be borne by 
physician PMS and EHR vendors. We further assume that some clinician 
practices and their vendors may take more time to implement the 
standards while continuing to use manual processes in the meantime. 
Therefore, we estimate clinicians will incur these costs over a 4-year 
period at a rate of 50 percent in the first implementation year, 30 
percent in the second implementation year, and 10 percent each in the 
third and fourth years, as summarized in Table 5.
    To determine the benefits for clinicians, we again referred to the 
estimates of savings for medical providers reported in the CAQH Index 
reports and calculated the remaining 80 percent of these savings. CAQH 
estimated the total annual savings opportunity for medical providers 
for fully automating attachments transactions to be $328 million. So, 
we estimate the clinician share to be 80 percent of $650 million, or 
$520 million. To reflect the uncertainty around the ultimate level of 
uptake of these standards, we estimate a range of 25 percent below this 
point estimate, or between $390 million to $520 million in annual 
savings, as summarized in Table 2. We further estimate that these 
benefits in labor savings will phase in over a 3-year period at the 
rate of 50 percent in the first operational year, 75 percent in the 
second operational year, and 100 percent in and after the third year 
after the compliance date, as summarized in Table 6.
c. Dentists
    As discussed in the HIPAA Standards for Health Care Attachments 
proposed rule, for dentists, we follow the same methodology for costs 
as we do for clinicians (87 FR 78462). The Modifications final rule 
cost estimates for dentists were within a range of $456 million to $913 
million, adjusted for inflation (74 FR 3317). We assume a comparable 
level of effort to implement the adopted health care claims attachments 
standards. We further assume that dental practice PMS and EHR vendors 
will incur these costs, absorbing some portion of the costs as a cost 
of doing business incorporated in the current level of health IT 
service and maintenance agreements and passing some portion of the 
costs on to the dental practices in the form of higher

[[Page 14391]]

fees for enabling new functionality. We again assume a 60/40 estimated 
cost split, in which the vendor will bear 60 percent of the 
implementation costs and the remaining 40 percent will be passed on to 
the customer. As summarized in Table 1, this results in a share of 
costs for dentists in the range of $182 million to $365 million, with 
the remainder in the range of $274 million to $548 million borne by 
dental practice PMS and EHR vendors. As with clinicians, we further 
assume that some dental practices and their vendors may take more time 
to implement the standards, while continuing to use manual processes in 
the meantime. Therefore, we estimate dentists will incur these costs 
over a 4-year period at the rate of 50 percent in the first 
implementation year, 30 percent in the second implementation year, and 
10 percent each in the third and fourth years, as summarized in Table 
5.
    Given that the 2024 CAQH Index did not report on the potential 
savings opportunity for dental providers for full automation of 
attachments transactions, we take a different approach to benefits 
estimation. Comments included in testimony submitted to the NCVHS 
regarding the attachment standard during the 2016 NCVHS Hearing 
indicated that dentists supported the proposal to make the X12N 275 
transaction the standard vehicle for transporting attachment content to 
dental claims.\48\ These comments also indicated that many dental PMS 
vendor technologies may lack the capability to generate HL7 documents, 
requiring dentists to either upgrade existing systems or find 
alternative methods, such as using a clearinghouse or payer portals. 
Thus, we conclude that some dentists and their PMS vendors will incur 
costs associated with submitting attachment information to support 
claims, and others may maintain current manual or clearinghouse-
mediated processes. Therefore, we assume that the savings opportunity 
for full automation of claims attachments for dentists will be a 
portion of the savings opportunity for medical providers. Since the 
total number of dental entities (118,045) is about 70 percent of the 
number of other provider entities (7,465 hospital establishments and 
149,572 clinician firms), we estimate their savings opportunity will be 
no greater than 70 percent of the annual $328 million medical provider 
savings opportunity for attachments estimated by the CAQH 2024 Index. 
In addition, we assume that, given the relatively smaller size of 
dental practices, a greater proportion of dentists than clinicians may 
choose to retain manual processes. So, as summarized in Table 2, we 
estimate that the annual dentist savings opportunity is 50 percent of 
70 percent of the medical provider opportunity, or $115 million (328 x 
0.70 x 0.50). To reflect the uncertainty around the ultimate level of 
uptake of these standards, we estimate a range of 25 percent below this 
point estimate, or between $86 million to $115 million in annual 
savings. As with the clinician estimates, we further estimate that 
these benefits in labor savings will phase in over a 3-year period at 
the rate of 50 percent in the first operational year, 75 percent in the 
second operational year, and 100 percent in and after the third year 
after the compliance date, as summarized in Table 6.
---------------------------------------------------------------------------

    \48\ At the time this final rule was being drafted, the NCVHS 
website was undergoing maintenance. NCVHS Subcommittee on Standards. 
Agenda of the February 16, 2016 NCVHS Subcommittee on Standards 
Hearing. Retrieved from https://ncvhs.hhs.gov/meetings/agenda-of-the-february-16-2016-ncvhs-subcommittee-on-standards-hearing/.
---------------------------------------------------------------------------

d. PMS and EHR Vendors
    In testimony given in the 2016 NCVHS Hearing, WEDI noted that a new 
functionality for providers implementing the attachment standards will 
be automating EHR systems to exchange data with the PMS and digital 
signatures.\49\ Consistent with this assessment, the 2016 MITRE 
environmental scan, as discussed at the beginning of this section, 
found that many EHR vendors had the capability to send X12N 275 EDI 
transactions, but that substantial work remained to routinely and 
reliably extract structured clinical data for C-CDA attachments. Since 
that time, there has been both growth and consolidation in these 
industry segments. A health care provider entity's PMS and EHR systems 
may be bundled in one product offering, semi-integrated affiliated 
systems, or entirely independent systems offered by separate 
vendors.\50\ So, readiness will vary widely for provider entities based 
on their health IT contractors.
---------------------------------------------------------------------------

    \49\ At the time this final rule was being drafted, the NCVHS 
website was undergoing maintenance. Transcript of the February 16, 
2016 NCVHS Subcommittee on Standards. Retrieved from https://ncvhs.hhs.gov/transcripts-minutes/transcript-of-the-february-16-2016-ncvhs-subcommittee-on-standards/.
    \50\ Pratt, M. (2018, May 30). The true cost of switching EHRs. 
Medical Economics Journal, 96(10). Retrieved from https://www.medicaleconomics.com/view/true-cost-switching-ehrs.
---------------------------------------------------------------------------

    Because developers of certified health IT are already familiar with 
CDA for meeting requirements under the ONC Health IT Certification 
Program, we believe all EHR vendors have some ability to extract data 
for C-CDA templates, although all may not have fully implemented or 
provided this functionality as part of core product offerings. A review 
of some of the largest EHR vendor websites in May 2021 provided 
informal evidence regarding C-CDA functionality. The results of this 
analysis suggested that about 80 percent of vendors had this 
functionality in place, 17 percent had at least partial functionality, 
and only 3 percent seemed to have none. The many other, smaller EHR 
vendors are likely in varying stages of readiness as well. Thus, we 
assume that additional implementation costs may be needed to reliably 
extract C-CDA documentation and to either integrate this content into 
internal EDI processes or exchange the documentation with another PMS.
    Similarly, we assume PMS vendors contracted with clients that have 
a certified EHR have already largely developed the X12N 275 and X12N 
277 standards for claims transactions, even if this functionality has 
not been enabled for all customers, and that the majority of the 
additional cost will be associated with receiving and managing the C-
CDA payload. Because of this pre-existing functionality, we are again 
persuaded that implementing these final requirements is more akin to a 
standards upgrade than implementing a new standard for the first time. 
Based on the 2024 CAQH Index results that 32 percent of medical and 37 
percent of dental attachment exchanges are occurring electronically, we 
are aware that some provider vendors have already successfully 
implemented the transmission of electronic attachments. Without data on 
the extent of the gaps, or on the difference in readiness between EHR 
and PMS vendors, we continue to assume similar costs across both types 
of vendors and treat them together. We also assume that other 
significant components of implementation costs will consist of trading 
partner testing and user training.

[[Page 14392]]

    The results of the estimates are described for hospitals, 
clinicians, and dentists, as well as the split with their health IT 
vendors, in Table 1. We estimate that PMS and EHR vendor costs will add 
up across all customer segments to a range of $1,527 to 3,054 million. 
We assume some vendors or their customers or both may take more time to 
implement the standards. Therefore, we estimate vendors' costs will be 
incurred over a 4-year period at the rate of 50 percent in the first 
implementation year, 30 percent in the second implementation year, and 
10 percent each in the third and fourth years, as summarized in Table 
5.
    We have not identified any evidence that suggests there will be 
savings for this segment as a result of the changes in this final rule 
and we do not include any estimates of benefits for this segment.
e. Clearinghouses
    From remarks recorded at the 2016 NCVHS Hearing, we understand 
that, by 2016, many entities in the clearinghouse industry had already 
fully implemented the standards being adopted in this final rule and 
were exchanging the transactions and clinical payloads with government 
and commercial health care entities, as well as with entities in other 
lines of business.\51\ Fundamental to the clearinghouse business role 
is the ability to normalize disparate data formats, including both 
structured and unstructured clinical data, and unwrap and convert the 
data into standard or proprietary formats based on the varying 
capabilities and needs of payer and provider clients. We assume that 
this ability has generally become the business norm throughout the 
clearinghouse industry. As a result, we assume that clearinghouses will 
not have significant new technology development costs as a result of 
these provisions but will have significant new trading partner testing 
costs.
---------------------------------------------------------------------------

    \51\ At the time this final rule was being drafted, the NCVHS 
website was undergoing maintenance. Transcript of the February 16, 
2016 NCVHS Subcommittee on Standards. Retrieved from https://ncvhs.hhs.gov/transcripts-minutes/transcript-of-the-february-16-2016-ncvhs-subcommittee-on-standards/.
---------------------------------------------------------------------------

    To estimate clearinghouse implementation costs, we considered 
information provided by a commenter, described in the Modifications 
final rule, that identified as a large clearinghouse (74 FR 3318). This 
commenter reported that projected costs would be at least $3.5 million 
($4.3 adjusted for inflation) and would be affected by the amount of 
testing that would be required with trading partners--both providers 
and health plans. Based on this data point, as summarized in Table 3, 
we estimate that 23 large clearinghouse entities will each incur $4.3 
million in implementation costs, and that the remaining 139 smaller 
clearinghouses will each incur $1.8 million in implementation costs, 
for a segment total of $349 million. To reflect the uncertainty around 
these projections, we estimate a range of 25 percent below and above 
this point estimate of between $262 million to $436 million in total 
costs. And since we assume some customers may take more time to 
implement the standards, we estimate clearinghouse will incur costs 
over a 4-year period at the rate of 50 percent in the first 
implementation year, 30 percent in the second implementation year, and 
10 percent each in the third and fourth years, as summarized in Table 
5.
    We have not identified any evidence that suggests there will be 
savings for clearinghouses as a result of the changes in this final 
rule and have not estimated any benefits for this segment.
[GRAPHIC] [TIFF OMITTED] TR24MR26.002

f. Private Health Plans and Issuers
    Based on our informal web searches conducted in May 2021 for plan 
websites that include EDI instructions for providers on submitting X12N 
275 transactions, and the general absence of comments describing 
significant implementation burden in testimony submitted to the 2016 
NCVHS Hearing, we believe health plans (or their clearinghouses) have 
generally already implemented the necessary technology to meet these 
final requirements. That includes: (1) currently implemented X12N 
transactions; and (2) at a minimum, having processes for collecting 
unstructured medical record data. Such data are currently used for 
auditing, risk coding validation, and other quality and utilization 
management processes. The 2024 CAQH Index reports that 32 percent of 
medical and 37 percent of dental attachment exchanges were occurring 
electronically in 2024. In addition, we understand that all health 
plans routinely collect medical record documentation from providers in 
a variety of ways, including through web portals and direct access to 
EHRs.\52\ These facts suggest to us that health plans have either 
already automated these processes or have workarounds to manage the 
receipt of this information. Thus, we believe the additional effort 
associated with implementing our proposals may be limited to mapping 
existing backend processes to the new transaction processing front-end 
systems. Alternatively, the smaller the health plan, the more likely 
that entity may rely upon a clearinghouse for administrative and 
clinical data exchange and the more likely the status quo will 
continue.
---------------------------------------------------------------------------

    \52\ For example, see: Payer Access to EHRs: What Providers Need 
to Know. Journal of AHIMA. October 9, 2019. Retrieved from https://journal.ahima.org/page/payer-access-to-ehrs-what-providers-need-to-know.
---------------------------------------------------------------------------

    In testimony during the 2016 NCVHS Hearing, WEDI noted that the 
functionality that will be new to payers in implementing the 
attachments standards will be the use of HL7 CDA LOINC codes, and other 
transport models that require different skill sets than EDI. Although 
payers routinely collect medical record documentation today, this does 
not necessarily mean that the ingestion, interpretation, and 
integration of clinical data is fully automated. However, we do not see 
evidence in testimony or public

[[Page 14393]]

comments that health plans anticipate a significant implementation 
effort related to additional technology development to handle the HL7 
CDA and LOINC codes required by federal adoption of attachments 
standards. It is possible, given payer involvement with the rapid 
evolution of clinical data exchange standards, that health plans may 
not be incentivized to significantly enhance their current state of C-
CDA handling, and may instead continue to rely on current processes, 
including the use of clearinghouses for intermediation where 
necessary.\53\ For these reasons, we do not believe health plans will 
bear as significant a level of investment for system development for 
these final requirements as they did for the requirements of the 
Modifications final rule. However, they will likely incur 
implementation costs for trading partner testing if they exchange these 
transactions directly with providers rather than via clearinghouses.
---------------------------------------------------------------------------

    \53\ Final Report Of The Health Information Technology Advisory 
Committee's Intersection of Clinical And Administrative Data Task 
Force To The National Coordinator For Health Information Technology. 
(2020, November 17) A Path Toward Further Clinical and 
Administrative Data Integration. Retrieved from https://www.healthit.gov/sites/default/files/page/2020-11/2020-11-17_ICAD_TF_FINAL_Report_HITAC.pdf.
---------------------------------------------------------------------------

    In light of these considerations, we assume that the costs of 
implementation for health plans may be somewhat analogous to those for 
clearinghouses, but generally with fewer connections to test, since 
many transactions will be expected to continue to be exchanged through 
existing clearinghouse connections. Therefore, as summarized in Table 
4, we estimate that private health plans will incur 50 percent of 
clearinghouse costs, and we increase that estimated range of $262 
million to $436 million to reflect 4.8 times as many health plan 
entities (772/162 = 4.8). Thus, we estimate private health plans will 
incur implementation costs, driven mostly by trading partner testing, 
of $838 million (349 x 0.50 x 4.8). To reflect the uncertainty around 
these projections, we estimate a range of 25 percent below and above 
this point estimate of between $629 million to $1,048 million.
[GRAPHIC] [TIFF OMITTED] TR24MR26.003

    Given that we assume some portion of providers and their vendors 
may take longer to move from manual to fully automated transactions, we 
assume health plan testing costs will extend beyond the 2-year 
implementation period. So, for purposes of this analysis, we estimate 
that private health plans will incur costs over a 4-year period at the 
rate of 50 percent in the first implementation year, 30 percent in the 
second implementation year, and 10 percent each in the third and fourth 
years.
    In estimating the benefits of the final rule for private health 
plans, we again referred to the estimates of savings reported by the 
2024 CAQH Index report, but this time to those reported for plans. CAQH 
estimated the 2024 national annual plan savings opportunities for 
attachments. To reflect the uncertainty around the ultimate level of 
uptake of these standards, we estimate a range of 25 percent below this 
point estimate between $108 million to $144 million in annual savings. 
We further assume that plans will realize the benefits in labor savings 
over a 3-year period at the rate of 50 percent in the first operational 
year, 75 percent in the second operational year, and 100 percent in and 
after the third year after the compliance date, as summarized in Table 
6.
g. Government Health Plans
    Similar to private health plans, we believe Medicare, Medicaid (and 
state CHIP agencies in states where CHIP is administered separately), 
and the Veteran's Administration systems have largely implemented the 
ability to receive and manage health care claims attachment 
transactions through their health IT processing vendors and contracted 
managed care plans and will incur costs similar to the impacts 
estimated in the Modifications final rule for testing and training. We 
assume these costs will again largely be borne by the contracted 
vendors under existing contractual terms and agreements. Accordingly, 
to calculate government health plan costs, we used the same range of 
costs estimated in the Modifications final rule of $384 million to $734 
million, adjusted for inflation. As discussed in the Modifications 
final rule, government systems costs are expected to occur across a 
number of federal and state agencies and include transition costs (73 
FR 49770). For Medicare, since its cost structure is different from 
private plans, total Medicare costs include those that would be 
expended by the Medicare Administrative Contractors (MACs), durable 
medical equipment (DME) MACs, and other contractors. The costs are 
high, but the net benefit to Medicare relative to the private plans is 
slightly more positive. As we do with health care providers and private 
health plans, we further assume that costs will be incurred over a 4-
year period. As summarized in Table 5, we estimate costs will be 
incurred at the rate of 50 percent in the first implementation year, 30 
percent in the second implementation year, and 10 percent each in the 
third and fourth years.
    To calculate government health plan benefits, we started with the 
point estimate of $238 million savings due to the standards adopted in 
the Modifications final rule (74 FR 3318). To reflect the uncertainty 
around the ultimate level of uptake of these standards, we estimate a 
range of 25 percent below this point estimate or between $179 million 
to $238 million in annual savings. As with other industry segments, and 
as summarized in Table 6, we further assume government health plans 
will realize the benefits in these savings over a 3-year period at the 
rate of 50 percent in the first operational year, 75 percent in the 
second

[[Page 14394]]

operational year, and 100 percent in and after the third year after the 
compliance date.
h. Pharmacies
    We believe pharmacies will generally not be impacted by the changes 
in this final rule. Comments from NCPDP submitted to the 2016 NCVHS 
Hearing indicated that: (1) pharmacies use the X12N 837 to bill 
medications and supplies covered under the Medicare Part B program and 
for professional pharmacy services covered under a medical plan; and 
(2) the type of claims submitted by pharmacy providers using the X12N 
837 rarely require an attachment. As a result, we assume pharmacies 
will be affected by these provisions only in rare cases to support the 
billing of retail pharmacy supplies and professional services claims. 
Based on an NCPDP whitepaper, we further understand that a pharmacy 
needing to send attachment information to support an X12N 837 claim 
will generally be expected to employ existing batch processes to send 
attachment information to the same clearinghouse that converts their 
NCPDP billing transactions to X12N 837 Professional Claims for 
formatting and transmittal in the X12N 275.\54\ Therefore, we assume 
that final changes to information exchanges between clearinghouses and 
health plans will continue to be managed by clearinghouses that serve 
this particular market. As a result, we conclude that pharmacies will 
generally not be affected by this final rule, and we estimate no costs 
and benefits for this segment.
---------------------------------------------------------------------------

    \54\ NCPDP White Paper on Pharmacy Professional Service Billing. 
Retrieved from https://www.ncpdp.org/NCPDP/media/pdf/WhitePaper/Billing-Guidance-for-Pharmacists-Professional-and-Patient-Care-Services-White-Paper.pdf?ext=.pdf.
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6. Summary of Costs and Benefits for This Final Rule
    Tables 5 and 6 are the compilation of the estimated costs and 
benefits for all the standards adopted in this final rule. Bear in 
mind, except for pharmacies, all of the other industries mentioned will 
incur costs over a four-year period, starting with the implementation 
of the requirements finalized in this rule. On the other hand, except 
for pharmacies, clearinghouses, and venders, all the other industries 
will incur benefits over a 3-year period at the rate of 50 percent in 
the first operational year, 75 percent in the second operational year, 
and 100 percent in and after the third year after the compliance date. 
These benefits, henceforth, will continue into perpetuity.
BILLING CODE 4120-01-P

[[Page 14395]]

[GRAPHIC] [TIFF OMITTED] TR24MR26.004


[[Page 14396]]


[GRAPHIC] [TIFF OMITTED] TR24MR26.005


[[Page 14397]]


BILLING CODE 4120-01-C
7. Regulatory Review Costs Estimate
    One of the costs of compliance with a final rule is the necessity 
for affected entities to review the rule in order to understand what it 
requires and what changes the entity will have to make to come into 
compliance. We assume that 451,908 affected entities (listed in Table 
2) will incur some of these costs, as they are the entities that will 
have to implement the final changes. The particular staff involved in 
such a review will vary from entity to entity but will generally 
consist of lawyers responsible for compliance activities (at all 
451,908 entities) and individuals familiar with the technical X12N and 
HL7 standards at the level of a computer and information systems 
manager at private and government health plans, clearinghouses, and PMS 
and EHR vendors (a total of 1,937 entities). Using the Occupational 
Employment and Wages for May 2024 from the Bureau of Labor Statistics 
for lawyers (Code 23-1011) and computer and information system managers 
(Code 11-3021), we estimate that the national mean labor costs of 
reviewing this rule are $175.72 and $180.76 per hour, respectively, 
including overhead and fringe benefits.\55\ We estimate that it will 
take approximately 2 hours for each staff person involved to review 
this final rule and its relevant sections and that, on average, one 
lawyer and two computer and information manager-level staff persons 
will engage in this review. For each entity that reviews the rule, the 
estimated costs are therefore $351.44 for lawyers, or $158.82 million 
(2 hours each x 1 staff x $175.72 x 451,908) for all affected entities. 
For each plan, clearinghouse, and PMS or EHR vendor, the estimated 
costs are therefore $180.76 for information system managers, or $1.40 
million (2 hours each x 2 staff x $180.76 x 1,937) for all affected 
entities. Therefore, we estimate that the total cost of reviewing this 
rule is $160.22 million ($158.82 + $1.40).
---------------------------------------------------------------------------

    \55\ U.S. Bureau of Labor Statistics. (2024, May 3). May 2024 
National Occupational Employment and Wage Estimates. Retrieved from 
https://data.bls.gov/oesprofile/.
---------------------------------------------------------------------------

D. Alternatives Considered

    This rule finalizes the adoption of standards for health care 
claims attachments transactions, which support health care claims, as 
required by section 1173(a) of the Act. Our understanding is that the 
standards we are adopting in this rule are ready for full 
implementation across industry. We considered the following regulatory 
alternatives: (1) not adopt standards for health care claims 
attachments, allowing for the industry's continued use of multiple 
processes; (2) wait to adopt standards for health care claims 
attachments until alternate standards, such as FHIR standards, are 
ready for full implementation and recommended to the Secretary by the 
NCVHS and industry through all the HIPAA-required processes; and (3) 
adopt a different version of the X12 implementation specifications than 
Version 6020, the version proposed for adoption in the HIPAA Standards 
for Health Care Attachments proposed rule. We chose to proceed with the 
provisions in this rule after identifying significant shortcomings with 
each of these alternatives.
    We chose to finalize adopting health care claims attachments 
standards rather than allowing for continued use of multiple processes 
because of the well-documented costs and administrative burdens 
associated with the many manual or partially electronic processes 
currently in use. These burdens were recently detailed in the 2024 CAQH 
Index. In response to multiple CAQH surveys, parties in the health care 
industry reported that the lack of federal standards and mandates has 
been a principal barrier to adoption of fully electronic standardized 
health care transactions.\56\ Based on these survey responses, should 
we not adopt standards for health care claims attachments, most 
attachments transactions would use different (non-standard) software or 
electronic means, and some entities might continue to use fully manual 
processes. Not adopting standards for health care claims attachments 
transactions would also mean forgoing the opportunity to reduce the 
unnecessary back-and-forth between health care providers and health 
plans, accelerate claims adjudication and patient service approval 
timeframes, and reduce provider resources spent on manual follow-up 
activities.
---------------------------------------------------------------------------

    \56\ The Council for Affordable Quality Healthcare, Inc. (n.d.). 
2024 CAQH Index Report. Retrieved from https://www.caqh.org/hubfs/Index/2024%20Index%20Report/CAQH_IndexReport_2024_FINAL.pdf.
---------------------------------------------------------------------------

    Similarly, we chose not to hold off on finalizing the adoption of 
health care claims attachments standards until alternate standards, 
such as FHIR standards, are available and recommended by the industry, 
because we believe that adoption and implementation of the 
specifications in this final rule can immediately reduce the costs and 
burdens associated with the lack of national standards. While we are 
aware of HL7's efforts to create alternative implementation 
specifications to support health care claims attachments transactions, 
we note that, at the time of writing this final rule, these FHIR 
implementation specifications have not been finalized or tested. We 
also note that the HL7 CDA standard we are adopting in this final rule 
is the only currently available SSO-created, NCVHS-recommended standard 
with published implementation specifications designed to support claims 
attachments transactions. We believe that the industry's readiness for 
improvements to the manual or partially electronic process currently in 
place, as outlined in the multiple CAQH stakeholder surveys and 
supported by the NCVHS's recommendation to adopt the specifications in 
this rule, support finalizing the adoption of attachments standards at 
this time. We invited comments on our understanding of the readiness of 
possible implementation specifications for health care attachments that 
support both claim and prior authorization transactions and whether the 
industry supports postponement of an adopted standard as it had 
previously. Commenters overwhelmingly agreed that it was time for 
industry to adopt a health care claims attachment standard, however 
they raised concerns on requiring it with the prior authorization 
transaction standard.
    Finally, we chose to finalize the adoption of Version 6020 of the 
X12N implementation specifications, rather than an alternate version 
such as Version 5010, because Version 5010 does not fully support 
health care claims attachments transactions. Version 6020 resolves 
technical issues and limitations in Version 5010 to enable attachments 
transactions that support health care claims. We also invited comments 
on any alternative implementation specifications that were not 
considered but met the criteria outlined in the HIPAA Standards for 
Health Care Attachments proposed rule. As stated previously, commenters 
agreed that moving to Version 6020 of the X12N implementation 
specifications was most appropriate for the actions being finalized in 
this rule.

E. Accounting Statement

    As required by OMB Circular A-4, we have prepared an accounting 
statement in Table 7 showing the classification of the impact 
associated with the provisions of this rule.\57\ Monetary annualized 
benefits and non-budgetary

[[Page 14398]]

costs are presented using 3 percent and 7 percent discount rates, over 
a 20-year time period.
---------------------------------------------------------------------------

    \57\ Management and Budget Office. (2003, October 9). Circular 
A-4, Regulatory Analysis. Retrieved from https://www.whitehouse.gov/wp-content/uploads/2025/08/CircularA-4.pdf.
[GRAPHIC] [TIFF OMITTED] TR24MR26.006

F. Regulatory Flexibility Analysis

    E.O. 13272 requires that HHS thoroughly review rules to assess and 
take appropriate account of their potential impact on small businesses, 
small governmental jurisdictions, and small organizations (as mandated 
by the RFA). The RFA requires agencies to analyze options for 
regulatory relief of small entities, if a rule has a significant impact 
on a substantial number of small entities. If a final rule has a 
significant economic impact on a substantial number of small entities, 
then the final rule must discuss steps taken, including alternatives 
considered, to minimize the burden on small entities. The Small 
Business Administration (SBA) advises that this absence of statutory 
specificity allows what is significant or substantial to vary, 
depending on the problem that is to be addressed in rulemaking, the 
rule's requirements, and the preliminary assessment of the rule's 
impact. Nevertheless, HHS typically considers a significant impact to 
be 3 to 5 percent or more of the affected entities' revenues.
    The RFA requires agencies to analyze options for regulatory relief 
of small entities, if a rule has a significant impact on a substantial 
number of small entities. For purposes of the RFA, we estimate that 
``almost all,'' of the affected entities are small entities as that 
term is used in the RFA (that is, small businesses, nonprofit 
organizations, and small governmental jurisdictions). The great 
majority of hospitals and most other health care providers and 
suppliers are small entities, either by being nonprofit organizations 
or by meeting the SBA's definition of a small business by having 
revenues of less than $9.0 million to $47.0 million in any 1 year.
    Accordingly, it is our normal practice to treat all health care 
providers as small entities. For health care providers, the changes 
made final by this rule may involve software upgrades for practice 
management and EHR systems. Thus, we expect that the vast majority of 
clinicians and other health care provider practices will need to make 
relatively small changes in their systems and processes but may incur 
additional service fees from their system vendors for additional 
functionality. Some of the smallest provider entities may elect to 
continue their current manual processes. We include pharmacies in this 
analysis and consider most of them to be small businesses. While we 
believe that few health plans meet the small business size standard, 
many health plans are non-profit organizations and will be considered 
small businesses; but we are unable to identify data to help us 
distinguish the number of these entities and thus solicited industry 
feedback for this final rule. We address clearinghouses, but we do not 
believe that there are a significant number of clearinghouses that will 
be considered small entities because of the level of consolidation in 
the marketplace. Because this final rule adopts initial standards for 
the exchange of both administrative and clinical documentation, we also 
address provider PMS and EHR vendors in our discussion but continue to 
be unable to identify data that will help identify the proportion of 
firms in these markets that meet the small business size standards. 
State Medicaid agencies (and state CHIP agencies in states where CHIP 
is administered separately) are excluded from this analysis because 
states are not considered small entities in any RFA.
    Table 5 presents the estimated implementation costs that will 
affect all

[[Page 14399]]

of the entities mentioned. The data in that table are used in this 
analysis to provide cost information.
    We have determined that the covered entities and their vendors 
affected by this final rule will likely fall primarily in the 
categories listed in Table 8.
[GRAPHIC] [TIFF OMITTED] TR24MR26.007

    Table 9 shows the distribution of small firms and revenues. 
According to this table, we can see and understand the disproportionate 
impacts among small firms and between small and large firms. According 
to the U.S. Census 2022 Statistics of U.S. Businesses (SUSB), the 
average revenue amounts to approximately $1,007,051 for all 552,979 
small businesses that earn between $9 and $47 million (see Table 8 for 
the distribution). That is, the total revenue amounts to approximately 
$597 billion.

[[Page 14400]]

[GRAPHIC] [TIFF OMITTED] TR24MR26.008

    Table 10 combines the small firm's size and revenue data with the 
cost estimates determined in this final rule to understand the economic 
impact on small entities.

[[Page 14401]]

[GRAPHIC] [TIFF OMITTED] TR24MR26.009

1. Number of Small Entities
    We used the most recent revenue data available from the U.S. Census 
2022 SUSB to determine the number of small entities and their revenue.

[[Page 14402]]

[GRAPHIC] [TIFF OMITTED] TR24MR26.010

    Based on the latest available U.S. Census 2022 SUSB data records, 
we estimate that 552,979 health care provider entities may be 
considered small entities either because of their nonprofit status or 
because of their revenues, as detailed in Table 11. Approximately 0.27 
percent (1,494) of these are hospitals, 25.58 percent (141,446) are 
clinician practices, and 21.61 percent (119,497) are dental practices. 
We believe that health IT systems are still more likely to differ at 
the firm level rather than at the establishment level. We continue to 
believe that this way of counting may overstate the number of affected 
entities in these segments, given the recent trends toward 
consolidation among and between provider types and toward increasing 
integration of health IT systems across collaborating organizations. 
However, this overestimation may compensate for other types of affected 
health care providers potentially not reflected in these particular 
industries. We note that ``hospitals'' include general medical and 
surgical, psychiatric and substance abuse, and specialty hospitals 
(NAICS 622). We further note that the number of 7,020 hospital 
establishments reflected in the U.S. Census 2022 SUSB business data 
roughly compares with more recent 2024 data from the American Hospital 
Association (AHA) indicating a total of 6,120 US hospitals, of which 
approximately 25 percent are for-profit. However, we do not have more 
detail, including data on the size of the hospitals included in this 25 
percent, in order to determine whether any should be excluded from the 
count of small entities.
    For consistency purposes, we used SUSB 2017 business data records 
to obtain the number of small pharmacy firms since the code for that 
provider was no longer available in the 2022 data, where such entities 
were reported under multiple different codes. The 2017 data reported a 
total of 18,912 small pharmacy firms.\58\ For 2022, the SUSB designates 
code 803 entities as Direct Health and Medical Insurance Carriers. 
Comparable data on the eight smaller Health Maintenance Organization 
Medical Centers are not available due to small cell size suppression. 
Although health plan firms may not qualify as small entities under the 
SBA receipts size standard, they may under a non-profit status. 
However, we are not aware of data that will help us understand the 
relationship between health plan firms and ownership tax status to 
quantify the number of such firms. Therefore, we are not including an 
analysis of the impact on small health plans.
---------------------------------------------------------------------------

    \58\ Note, the NAICS code for this industry changed in 2022, and 
now include NAICS 454110, Electronic Shopping and Mail Order Retail 
and 454390, Other Direct Selling Establishments; however, 2022 
revenue data are not available. For this reason, 2017 revenue data 
will be used in this analysis.
---------------------------------------------------------------------------

    Clearinghouses provide transaction processing and data translation 
services to both health care providers and health plans that will be 
critical to implementing this final rule. The applicable NAICS category 
includes many types of financial transaction processing firms other 
than those affected by this rule, so the Census business data cannot be 
used to identify small entities of interest. In previous rulemaking, we 
have identified a largely consolidated market (74 FR 3312). More 
recently, in 2024, the National Clearinghouse Association, Cooperative 
Exchange, indicated its 18 member companies represent over 85 percent 
of the clearinghouse industry and provide services to over 750,000 
provider organizations, through more than 8,000 payer connections and 
1,000 health IT vendors.\59\
---------------------------------------------------------------------------

    \59\ From testimony submitted for the 7/23/2024 US Senate 
Finance Committee. Retrieved from https://s3.amazonaws.com/amo_hub_content/Association618/files/Cooperative%20Exchange%20-%20Senate%20Finance%20Committee%20-%20final.pdf.
---------------------------------------------------------------------------

    Other vendors affected by this rule include provider PMS and EHR 
technology system vendors. Counting the affected entities in these two 
segments is complicated, in part because they are increasingly 
integrated. A health care provider entity's PMS and EHR systems may be 
bundled in one product offering, semi-integrated affiliated systems, or 
entirely independent systems offered by separate vendors.\60\ We have 
not identified publicly available data on the number, size, or market 
share of these specific parties in the health care industry. NAICS 
industry categories 541611, PMS Vendors, or 561990, All Other Support 
Services (EHR Vendors) seem to be the

[[Page 14403]]

closest categories. According to the 2022 SUSB, these categories 
included over 102,686 small firms. However, this total seems out of 
proportion to other potential indicators of market size, leading us to 
believe it significantly overstates the affected entities of interest 
to this final rule. For instance: (1) the aforementioned Cooperative 
Exchange description of member firms scope cited connections with 1,000 
health IT vendors; (2) in 2019, market research estimates indicated 
there were over 500 vendors offering some type of EHR product; (3) the 
21st Century Cures Act: Interoperability, Information Blocking, and the 
ONC Health IT Certification Program final rule (85 FR 25642) estimated 
the number of certified health IT developers with health IT products 
capable of recording electronic health information certified in the 
2015 Edition of Health IT certification criteria to be 458; and (4) the 
EHR Association, a trade association of EHR companies addressing 
national efforts to create interoperable EHRs in hospital and 
ambulatory care settings, lists 29 companies as 
members.61 62 A web search for NAICS codes associated with a 
sampling of these EHR Association member companies yielded many 
different NAICS codes (including some with 561990), possibly reflecting 
widely varying scopes of other products and services offered by firms 
in this market segment. Without more definitive data on the firms 
specific to the health care provider PMS and EHR business markets, we 
continue to estimate that the number of affected firms is around 1,000, 
with the bulk of market share served by a relatively small number of 
large entities and the remainder of market share served by many smaller 
entities. However, we are still unable to determine how many of these 
smaller entities may meet small business standards and are not 
subsidiaries of larger firms, so we do not include them in this small 
entity analysis.
---------------------------------------------------------------------------

    \60\ Pratt, M. (2018, May 30). The true cost of switching EHRs. 
Medical Economics Journal, 96(10). Retrieved from https://www.medicaleconomics.com/view/true-cost-switching-ehrs.
    \61\ Green, J. (2019, October 18). Who are the largest EHR 
vendors. EHR in Practice. Retrieved from https://www.ehrinpractice.com/largest-ehr-vendors.html.
    \62\ HIMSS Electronic Health Record Association. (n.d.). EHR 
Association Members. Retrieved from https://www.ehra.org/membership/ehra-members.
---------------------------------------------------------------------------

2. Costs to Small Entities
    To determine the economic impact on the health care providers 
considered to be small entities for this analysis (identified in the 
previous section), we used the U.S. Census 2022 SUSB business data to 
collect revenue estimates and compared these to the net annualized 
primary cost estimates including the regulatory review costs ($14.13 
million) as summarized in Table 10. When the net annualized primary 
cost estimates were determined, there were $34.46 million for the 
industries overall. We calculated the percentage of revenue represented 
by the primary estimates, and small businesses earning less than 
$100,000 exceeded the 3 to 5 percent of the revenue threshold, as 
summarized in Table 10 (11.7 percent). However, overall, all of the 
small businesses that earn between $100,000 or less and $499 million, 
did not exceed the 3 to 5 percent of the revenue threshold. That 
threshold is only 0.6 percent. If the net annualized costs are $34.46 
million, then each of the 552,979 small businesses incurs a net 
annualized cost of $62.32, regardless of their size by receipts. That 
is, each firm would incur a cost of only $62.32. Thus, for the purposes 
of this RFA, there were no disproportionate impacts among small firms, 
and between small and large firms.
    Therefore, for the purposes of the RFA analysis, we can conclude 
there is no impact on all the small entities. As a measure of 
significant economic impact on a substantial number of small entities, 
HHS uses a change in revenue of more than 3 to 5 percent. None of the 
small entities came close to meeting the 3 to 5 percent threshold. Even 
if the regulatory review costs were included in the cost estimates, the 
3 to 5 percent change in revenue would still not be reached.
    As such, we do not believe that this threshold will be reached by 
the requirements in this final rule. Therefore, the Secretary has 
certified that this rule will not have a significant economic impact on 
all the small entities identified.
    Comment: A commenter expressed concern regarding HHS's assertion 
that the adoption of these changes will result in benefits that will 
outweigh the costs. The commenter recommended HHS consider mitigation 
strategies for Special Needs Plans (SNP), such as locally committed and 
smaller plans undertaking efforts to overcome challenges to comply with 
the final requirements in this rule, as these entities were not 
included in the analyses presented in the RIA section of the proposed 
rule.
    Response: While we appreciate the commenter's concern, HHS was not 
provided with any alternative data to consider deriving with the 
estimated costs for SNPs. Therefore, for the purposes of this response 
and this final rule, we believe that SNPs fall into the category of 
health plans. We included an analysis of the impact specifically on 
small health plans in the proposed rule, and continue to do so in this 
final rule, and we received no comments on our small health plan cost 
assumptions. Moreover, as stated in section VI.C.1. of this final rule, 
an important consideration reflected in various industry testimonies 
submitted to the NCVHS is that some interested parties, particularly 
smaller health care providers, will continue to have the option to 
leverage existing clearinghouses to provide these information exchange 
services based on negotiated rates. This is a standard practice today, 
where clearinghouses already manage 90 percent of the conversion of 
paper-to-electronic formats, as well as reformatting of non-compliant 
to compliant electronic claim transactions for the industry.
    However, because of the relative uncertainty in the data, the lack 
of consistent industry data, and our general assumptions, we invited 
public comments on the analysis, requesting any additional data that 
would help us determine more accurately the economic impact on all the 
industries affected by this final rule, and did not receive any. We 
note that we did, where appropriate, update our calculations using 
current data.
    In addition, section 1102(b) of the Act requires us to prepare an 
RIA if a rule will have a significant impact on the operations of a 
substantial number of small rural hospitals. This analysis must conform 
to the provisions of section 604 of the RFA. For the purposes of 
section 1102(b) of the Act, we define a small rural hospital as a 
hospital that is located outside of a metropolitan statistical area and 
has fewer than 100 beds. This final rule will not have a significant 
effect on the operations of a substantial number of small rural 
hospitals because these entities will rely on contracted health IT 
vendors for the majority of implementation investment and efforts such 
hospitals elect to implement. We note that health care providers may 
choose not to conduct transactions electronically. Therefore, they will 
be required to use these standards only for transactions that they 
conduct electronically and will be expected to do so only when the 
benefits clearly outweigh the costs involved. As such, the Secretary 
has certified that this final rule will not have a significant impact 
on the operations of a substantial number of small rural hospitals.

G. Unfunded Mandates Reform Act (UMRA)

    Section 202 of UMRA also requires that agencies assess anticipated 
costs and benefits before issuing any rule

[[Page 14404]]

whose mandates will require spending more in any one year than 
threshold amounts in 1995 dollars, updated annually for inflation. In 
2025, this threshold is approximately $187 million. This final rule may 
impose mandates that will result in the expenditure by state, local, 
and tribal governments, in the aggregate, or by the private sector, of 
more than $187 million in any one year. In general, each state Medicaid 
agency, and each state CHIP agency in states where CHIP is administered 
separately, and any other government entity that is considered a 
covered entity, will be required to ensure that its contracted claim 
processors update software and conduct testing and training to 
implement the adoption of the new standards and modified versions of a 
previously adopted standard. However, we have no reason to believe that 
ongoing contractual payment arrangements for these services will 
necessarily increase as a result of the proposed changes. UMRA does not 
address the total cost of a rule. Rather, it focuses on certain 
categories of cost, mainly federal mandate costs resulting from 
imposing enforceable duties on state, local, or tribal governments, or 
on the private sector; or increasing the stringency of conditions in, 
or decreasing the funding of, state, local, or tribal governments under 
entitlement programs.

H. Federalism

    E.O. 13132 establishes certain requirements that an agency must 
meet when it promulgates a final rule that imposes substantial direct 
requirement costs on state and local governments, preempts state law, 
or otherwise has federalism implications. This final rule will have a 
substantial direct effect on state or local governments, could preempt 
state law, or otherwise have a federalism implication because state 
Medicaid agencies, and state CHIP agencies when administered separately 
from Medicaid, or their contractors will be implementing new standards 
and a modified version of an existing standard for which there will be 
expenses for implementation and wide-scale testing.

I. Executive Order (E.O.) 14192, ``Unleashing Prosperity Through 
Deregulation''

    E.O. 14192, titled: ``Unleashing Prosperity Through Deregulation'' 
was issued on January 31, 2025, and requires that ``any new incremental 
costs associated with new regulations shall, to the extent permitted by 
law, be offset by the elimination of existing costs associated with at 
least 10 prior regulations.'' This final rule is considered an E.O. 
14192 regulatory action. We estimate that this final rule will generate 
$333 million in annualized costs at a 7 percent discount rate, over a 
perpetual time horizon.
    This final rule is subject to the Congressional Review Act (5 
U.S.C. 801 et seq.) and has been transmitted to the Congress and the 
Comptroller General for review.

List of Subjects

45 CFR Part 160

    Administrative practice and procedure, computer technology, health 
care, health facilities, health insurance, health records, hospitals, 
Medicaid, Medicare, and CHIP Penalties, and Reporting and recordkeeping 
requirements.

45 CFR Part 162

    Administrative practice and procedures, electronic transactions, 
health facilities, health insurance, hospitals, incorporation by 
reference, Medicaid, Medicare, and CHIP reporting and recordkeeping 
requirements.
    For the reasons set forth in this preamble, the Department of 
Health and Human Services amends 45 CFR parts 160 and 162 to read as 
follows:

PART 160--GENERAL ADMINISTRATIVE REQUIREMENTS

0
1. The authority citation for part 160 continues to read as follows:

    Authority:  42 U.S.C. 1302(a), 42 U.S.C. 1320d-1320d-8, sec. 264 
of Pub. L. 104 191, 110 Stat. 2033-2034 (42 U.S.C. 1320d-2 (note)), 
5 U.S.C. 552; secs. 13400 and 13424, Pub. L. 111-5, 123 Stat. 258-
279, and sec. 1104 of Pub. L. 111-148, 124 Stat. 146-154.


0
2. In Sec.  160.103, revise paragraph (10) of the definition of 
``Transaction'' to read as follows:


Sec.  160.103  Definitions.

* * * * *

Transaction * * *

    (10) Health care claims attachments.
* * * * *

PART 162--ADMINISTRATIVE REQUIREMENTS


0
3. The authority citation for part 162 continues to read as follows:

    Authority:  42 U.S.C. 1320d--1320d-9 and secs. 1104 and 10109 of 
Pub. L. 111-148, 124 Stat. 146-154 and 915-917.


0
4. Section 162.103 is amended by adding the definitions of ``Attachment 
information'' and ``Electronic signature'' to read as follows:


Sec.  162.103  Definitions.

* * * * *
    Attachment information means documentation that enables the health 
plan to make a decision about health care that is not included in a 
health care claims or equivalent encounter information transaction, as 
described in Sec.  162.1101.
* * * * *
    Electronic signature means an electronic sound, symbol, or process, 
attached to, or logically associated with attachment information and 
executed by a person with the intent to sign the attachment 
information.
* * * * *


0
5. Section 162.920 is amended by:
0
a. Revising the introductory text and paragraph (a) introductory text; 
and
0
b. Adding paragraphs (a)(19) and (20) and (e).
    The revisions and additions read as follows:


Sec.  162.920  Availability of implementation specifications and 
operating rules.

    Certain material is incorporated by reference into this part with 
the approval of the Director of the Federal Register under 5 U.S.C. 
552(a) and 1 CFR part 51. To enforce any edition other than that 
specified in this section, the Department of Health and Human Services 
must publish a document in the Federal Register and the material must 
be available to the public. All approved incorporation by reference 
(IBR) material is available for inspection at the Centers for Medicaid 
& Medicare Services (CMS) and the National Archives and Records 
Administration (NARA). Contact CMS at: 7500 Security Boulevard, 
Baltimore, Maryland 21244; [email protected]; 
(410) 786-6597. For information on the availability of this material at 
NARA, www.archives.gov/federal-register/cfr/ibr-locations or email 
[email protected]. The material may be obtained from the following 
source(s):
    (a) ASC X12, 7600 Leesburg Pike, Suite 430, Falls Church, VA 22043; 
Telephone (703) 970-4480; www.X12.org. ASC X12N specifications and the 
ASC X12 Standard for Electronic Data Interchange Technical Report Type 
3:
* * * * *
    (19) The ASC X12N/006020X314, Additional Information to Support a 
Health Care Claim or Encounter (275), September 2014; as referenced in 
Sec.  162.2002(c).
    (20) The ASC X12N/006020X313, Health Care Claim Request for 
Additional Information (277),

[[Page 14405]]

September 2014; IBR approved for Sec.  162.2002(d).
* * * * *
    (e) Health Level Seven International (HL7), 3300 Washtenaw Avenue, 
Suite 227, Ann Arbor, MI 48104; Telephone (734) 677-7777; F 
www.hl7.org.
    (1) HL7 CDA R2 Attachment Implementation Guide: Exchange of C-CDA 
Based Documents, Release 2--US Realm, Version 2.1.0.1; September 2023; 
IBR approved for Sec.  162.2002(a).
    (2) HL7 Implementation Guide for CDA Release 2: Consolidated CDA 
Templates for Clinical Notes (US Realm) Draft Standard for Trial Use 
Release 2.1, Volume One--Introductory Material, August 2015 with 2019 
June Errata; IBR approved for Sec.  162.2002(b).
    (3) HL7 Implementation Guide for CDA Release 2: Consolidated CDA 
Templates for Clinical Notes (US Realm) Draft Standard for Trial Use 
Release 2.1, Volume Two--Templates and Supporting Material, June 2019; 
IBR approved for Sec.  162.2002(b).
    (4) HL7 Implementation Guide for CDA Release 2: Digital Signatures 
and Delegation of Rights, Release 1, Draft Standard for Trial Use, 
October 2014; IBR approved for Sec.  162.2002(e).


0
6. Add subpart T, consisting of Sec. Sec.  162.2001 and 162.2002 to 
read as follows:

Subpart T--Health Care Claims Attachments

Sec.
162.2001 Health care claims attachments transaction.
162.2002 Standards for health care claims attachments transaction.


Sec.  162.2001  Health care claims attachments transaction.

    A health care claims attachments transaction is the transmission of 
either of the following:
    (a) Attachment information from a health care provider to a health 
plan in support of a health care claims or equivalent encounter 
transaction, as described in Sec.  162.1101.
    (b) A request from a health plan to a health care provider for 
attachment information.


Sec.  162.2002  Standards for health care claims attachments 
transaction.

    The Secretary adopts the following standards for the period on and 
after May 26, 2028:
    (a) For transmissions described in Sec.  162.2001, HL7 CDA Release 
2: Attachment Implementation Guide: Exchange of C-CDA Based Documents, 
Release 2--US Realm, Version 2.1.0.1 September 2023 (incorporated by 
reference, see Sec.  162.920).
    (b) For transmissions described in Sec.  162.2001(a)--
    (1) HL7 Implementation Guide for CDA Release 2: Consolidated CDA 
Templates for Clinical Notes (US Realm) Draft Standard for Trial Use 
Release 2.1, Volume One--Introductory Material, August 2015 with 2019 
June Errata (incorporated by reference, see Sec.  162.920)
    (2) HL7 Implementation Guide for CDA Release 2: Consolidated CDA 
Templates for Clinical Notes (US Realm) Draft Standard for Trial Use 
Release 2.1, Volume Two--Templates and Supporting Material, June 2019 
(incorporated by reference, see Sec.  162.920).
    (c) For transmissions described in Sec.  162.2001(a), the ASC X12N/
06020X314--Additional Information to Support a Health Care Claim or 
Encounter (275) (incorporated by reference, see Sec.  162.920).
    (d) For transmissions described in section 162.2001(b) that pertain 
to Sec.  162.2001(a) transmissions, the ASC X12N/006020X313--Health 
Care Claim Request for Additional Information (277) (incorporated by 
reference, see Sec.  162.920).
    (e) For transmissions described in Sec.  162.2001(a), where a 
health care provider uses an electronic signature, the HL7 
Implementation Guide for CDA Release 2: Digital Signatures and 
Delegation of Rights, Release 1, Draft Standard for Trial Use, October 
2014 (incorporated by reference, see Sec.  162.920).

Robert F. Kennedy, Jr.,
Secretary, Department of Health and Human Services.
[FR Doc. 2026-05676 Filed 3-20-26; 4:15 pm]
BILLING CODE 4120-01-P