1. Billions in estimated Medicare Advantage payments from chart reviews raise concerns Publication: [Washington, D.C.] : U.S. Department of Health and Human Services, Office of Inspector General, December 2019 Subject(s): Insurance, Health, ReimbursementMedical Records -- economicsMedicare Part C -- economicsQuality of Health CareRisk AdjustmentUnited StatesUnited States. Department of Health and Human ServicesCenters for Medicare & Medicaid Services (U.S.)