1. Medicaid: states' changes to payment rates for substance use disorder services : report to Congressional committees Publication: Washington, DC : United States Government Accountability Office, January 2020 Subject(s): Drug Users -- legislation & jurisprudenceGovernment RegulationHealthcare Disparities -- legislation & jurisprudenceMedicaid -- legislation & jurisprudenceReimbursement, Disproportionate ShareSubstance-Related DisordersUnited StatesCenters for Medicare & Medicaid Services (U.S.)