Risk Sharing, FinancialMedicareCenters for Medicare and Medicaid Services (U.S.)Medicare Part BMedicare Part AUnited StatesFee-for-Service PlansInsurance, Pharmaceutical ServicesReimbursement MechanismsInsurance BenefitsProspective Payment SystemInsurance Claim ReviewHealth ExpendituresMedicare Payment Advisory CommissionInsurance, MedigapInsurance CoverageMedicaidFee SchedulesRate Setting and ReviewEligibility DeterminationEconomics, Hospital