About Medicare
Medicare covers substance use disorder treatment, but the specifics depend on which part of Medicare applies and what level of care is involved.
Part A and Part B
Medicare Part A covers inpatient hospital-based detox and treatment; Part B covers outpatient services, including opioid treatment programs (methadone and buprenorphine clinics), individual and group therapy, and some medication-assisted treatment. Medicare Advantage (Part C) plans are required to cover at least what Original Medicare covers, though specific network rules vary by plan.
A common gap
Standard Medicare has historically covered fewer residential and long-term rehabilitation options than Medicaid or private insurance, since much addiction treatment falls outside traditional hospital-based care that Medicare was originally designed around. Checking directly with a facility about what specifically is billed to Medicare, and for what duration, avoids surprises after admission.
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This page is for general education only and is not medical or insurance advice. Coverage varies by specific plan — always confirm directly with your insurer and the facility before admission. If you or someone you know is in crisis, call or text 988.