1. Medicare Part B drug payments: impact of price substitutions based on 2017 average sales prices Publication: [Washington, D.C.] : U.S. Department of Health and Human Services, Office of Inspector General, August 2019 Subject(s): Cost ControlCost SavingsDrug CostsInsurance, Health, ReimbursementMedicare Part B -- economicsReimbursement MechanismsEconomics, PharmaceuticalHumansUnited StatesCenters for Medicare & Medicaid Services (U.S.)