As part of MACPAC’s ongoing work addressing behavioral health service use in Medicaid, the Commission is focusing on Medicaid enrollees with intellectual and developmental disabilities (I/DD) who may face unique barriers to accessing behavioral health care in Medicaid. MACPAC conducted a literature review and federal policy scan to understand how adults ages 19-64 with I/DD in Medicaid receive and use behavioral health services and the barriers they face accessing these services. In this session, staff reviewed background information about adults with I/DD in Medicaid, presented findings from the literature review and federal policy scan, and detailed next steps for MACPAC’s analysis.