1. Medicare Advantage appeal outcomes and audit findings raise concerns about service and payment denials Publication: [Washington, D.C.] : U.S. Department of Health and Human Services, Office of Inspector General, September 2018 Subject(s): Health Services AccessibilityInsurance Claim Review -- statistics & numerical dataInsurance CoverageInsurance, Health, ReimbursementMedicare Part CFinancial AuditInsurance Claim Review -- economicsManaged Care ProgramsHumansUnited StatesUnited States. Department of Health and Human Services.Centers for Medicare & Medicaid Services (U.S.)