1. Medicare: CMS should provide beneficiaries more information about substance use disorder coverage : report to Congressional committees Publication: Washington, DC : United States Government Accountability Office, May 2020 Subject(s): Insurance BenefitsInsurance CoverageSubstance-Related Disorders -- therapyMental Health ServicesMedicareFacilities and Services UtilizationUnited StatesCenters for Medicare & Medicaid Services (U.S.)