1. States face ongoing challenges in meeting third-party liability requirements for ensuring that Medicaid functions as the payer of last resort Publication: [Washington, D.C.] : U.S. Department of Health and Human Services, Office of Inspector General, October 2023 Subject(s): Financial AuditGovernment RegulationInsurance, Health, Reimbursement -- legislation & jurisprudenceMedicaid -- economicsState Health PlansUnited States