United States Government Publishing Office publisher pbl distributor dst United States Government Accountability Office Program Evaluation and Methodology Division author aut Government Organization text government publication eng GAOREPORTS Legislative Agency Publications gao legislative 2010-08-12 U.S. Government Printing Office 1994-12-19 monographic deposited born digital 64 p. GA 1.13:PEMD-95-10 https://www.govinfo.gov/app/details/GAOREPORTS-PEMD-95-10 P0b002ee180376ddb f:pe95010 DGPO 2010-08-12 2011-03-23 GAOREPORTS-PEMD-95-10 machine generated eng fdlp REPORT GAOREPORTS-PEMD-95-10 PEMD-95-10 Claims processing Claims settlement Medicare programs Evaluation criteria Health care cost control Insurance companies Medical expense claims Health care services Beneficiaries Medical information systems Letter Report PEMD A0150

To determine whether Medicare carriers in various parts of the country differed significantly in denying coverage for medical treatment they consider unnecessary, GAO analyzed Medicare Part B data on claims processed by six Medicare carriers for 74 services that were either expensive or heavily used. The carriers GAO studied included California Blue Shield, Transamerica Occidental Life Insurance, Connecticut General Life Insurance Company, Blue Shield of South Carolina, Illinois Blue Cross and Blue Shield, and Wisconsin Physicians' Service. GAO found that the magnitude of carrier denial rates for Medicare Part B claims was generally low and persistent for two consecutive years, although rates for some services shifted. Medical necessity denial rates for 74 services across six carriers varied substantially. The main reason was that some carriers used computerized screening criteria for specific services while others did not. Further, a small proportion of the providers accounted for half of the denied claims. To a lesser degree, the varying interpretation of national coverage standards across carriers, differences in the way carriers treated claims with missing information, and reporting inconsistencies also explained the variation in carrier denial rates. GAO summarized this report in testimony before Congress; see: Medicare Part B: Factors That Contribute to Variation in Denial Rates for Medical Necessity Across Six Carriers, by Terry E. Hedrick, Assistant Comptroller General for Program Evaluation and Methodology, before the Subcommittee on Regulation, Business Opportunities, and Technology, House Committee on Small Business. GAO/T-PEMD-95-11, Dec. 19, 1994 (17 pages). https://www.govinfo.gov/content/pkg/GAOREPORTS-PEMD-95-10/html/GAOREPORTS-PEMD-95-10.htm https://www.govinfo.gov/content/pkg/GAOREPORTS-PEMD-95-10/pdf/GAOREPORTS-PEMD-95-10.pdf GAO/PEMD-95-10 https://www.govinfo.gov/app/details/GAOREPORTS-PEMD-95-10 Letter Report GAO/PEMD-95-10; Medicare Part B: Regional Variation in Denial Rates for Medical Necessity; Claims processing Claims settlement Medicare programs Evaluation criteria Health care cost control Insurance companies Medical expense claims Health care services Beneficiaries Medical information systems Title 42 Section 1395k Title 42 Section 1395u Title 42 Section 1395y 42 U.S.C. 1395k 42 U.S.C. 1395u 42 U.S.C. 1395y