The Centers for Medicare & Medicaid Services released their second publication of Medicaid data to help policymakers, researchers, and other stakeholders better target substance use disorder (SUD) prevention and treatment efforts. The publication, the Transformed Medicaid Statistical Information System (T-MSIS) based Medicaid Substance Use Disorder Data Book, includes 2018 data on Medicaid beneficiaries treated for SUD, and the services they received by type and setting, delivery system, and progression of care. A few key data findings from the 2018 data book are as follows: 

  • 4.6 million (8%) out of 55.9 million Medicaid beneficiaries ages 12 and older were treated for a SUD in 2018 
  • 46%, nearly half of beneficiaries, that were treated for a SUD received emergency services 
  • 30% of beneficiaries treated for a SUD had an opioid use disorder 

The complete interactive T-MSIS based Medicaid Substance Use Disorder Data Book can be found at