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Hierarchical category code risk score

Richard Kronick, W Pete Welch
BACKGROUND: In 2004, Medicare implemented a system of paying Medicare Advantage (MA) plans that gave them greater incentive than fee-for-service (FFS) providers to report diagnoses. DATA: Risk scores for all Medicare beneficiaries 2004-2013 and Medicare Current Beneficiary Survey (MCBS) data, 2006-2011. MEASURES: Change in average risk score for all enrollees and for stayers (beneficiaries who were in either FFS or MA for two consecutive years)...
2014: Medicare & Medicaid Research Review
Yunjie Song, Jonathan Skinner, Julie Bynum, Jason Sutherland, John E Wennberg, Elliott S Fisher
BACKGROUND: Current methods of risk adjustment rely on diagnoses recorded in clinical and administrative records. Differences among providers in diagnostic practices could lead to bias. METHODS: We used Medicare claims data from 1999 through 2006 to measure trends in diagnostic practices for Medicare beneficiaries. Regions were grouped into five quintiles according to the intensity of hospital and physician services that beneficiaries in the region received. We compared trends with respect to diagnoses, laboratory testing, imaging, and the assignment of Hierarchical Condition Categories (HCCs) among beneficiaries who moved to regions with a higher or lower intensity of practice...
July 1, 2010: New England Journal of Medicine
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