1. Data inadequacies undermine CMS's oversight of the inconsistency resolution process for the federal marketplace Publication: [Washington, D.C.] : U.S. Department of Health and Human Services, Office of Inspector General, March 2017 Subject(s): Data CollectionEligibility DeterminationHealth Insurance ExchangesCost SharingFederal GovernmentGovernment RegulationHumansUnited StatesUnited States. Department of Health and Human Services.United States.Centers for Medicare & Medicaid Services (U.S.)