Parts A, B & D Addiction Treatment Coverage — 2026
Federal law requires Medicare to cover addiction treatment under the Mental Health Parity & Addiction Equity Act (MHPAEA). Verify your exact Medicare benefits free — no surprises before treatment.
Medicare covers addiction treatment for Americans 65 and older and qualifying individuals with disabilities. Coverage spans Parts A, B, and D — each covering different aspects of addiction care. While Medicare's SUD coverage has historically been more limited than Medicaid, it has expanded significantly in recent years — especially for MAT medications and outpatient services.
The 2020 Medicare Opioid Treatment Program (OTP) benefit was a landmark expansion — Medicare now covers methadone treatment at licensed OTPs under a monthly bundled payment. Medicare Part D covers buprenorphine (Suboxone) prescriptions, and Part B covers outpatient therapy, PHP, and IOP. Medicare Advantage (Part C) plans from carriers like Humana, UnitedHealthcare, and WellCare often provide even broader addiction treatment benefits than Original Medicare.
| Level of Care | Coverage Status | Key Notes |
|---|---|---|
| Medical Detox (Hospital Inpatient) | ✓ Part A — Covered | Covered under Part A as hospital inpatient care. Part A deductible applies ($1,632/benefit period in 2024). |
| Inpatient Psychiatric Facility | ✓ Part A — 190-day lifetime limit | 190-day lifetime limit for freestanding psychiatric hospitals. No lifetime limit for psychiatric units in general hospitals. |
| Partial Hospitalization (PHP) | ✓ Part B — Covered | Covered as outpatient mental health when medically necessary. 20% coinsurance after $240 annual deductible. |
| Intensive Outpatient (IOP) | ✓ Part B — Covered | Covered under Part B. 20% coinsurance after annual deductible. |
| Outpatient Counseling | ✓ Part B — Covered | Individual/group therapy with psychiatrist, psychologist, or licensed clinical social worker. |
| MAT — Buprenorphine (Suboxone) | ✓ Part D — Covered | Covered under Medicare prescription drug plans. Copay varies by plan tier. |
| MAT — Methadone (OTP) | ✓ Medicare OTP Benefit (Since 2020) | Monthly bundled payment to licensed OTPs — covers methadone, counseling, toxicology, and ancillary services. |
| MAT — Naltrexone (Vivitrol) | ✓ Part D / Part B | Oral tablet under Part D pharmacy benefit; injectable Vivitrol often under Part B medical benefit. |
| Dual Diagnosis Treatment | ✓ Parts A & B | Co-occurring mental health and SUD treatment covered under Parts A and B when medically necessary. |
| Medicare Advantage (Part C) | ✓ Often Broader Coverage | Most MA plans match or exceed Original Medicare SUD benefits. Many add transportation to treatment. |
Coverage varies by plan and state. Call (844) 561-0606 for a free real-time benefits verification specific to your Medicare plan.
Medicare Part A covers inpatient hospital care including medically supervised alcohol and drug detox. When admitted to a hospital for detox or a psychiatric facility for SUD treatment, Part A covers the stay after your deductible ($1,632 per benefit period in 2024). After 60 days in a benefit period, daily copays apply ($408/day days 61–90).
For freestanding psychiatric hospital stays, Medicare Part A covers up to 190 days over your lifetime. There is no lifetime limit for psychiatric units within general hospitals — which is where most inpatient SUD treatment occurs.
Part B covers the majority of outpatient addiction services:
You pay 20% coinsurance after your annual deductible ($240 in 2024). Once you hit your out-of-pocket maximum, Medicare covers 100%.
Part D covers prescription medications including MAT medications for opioid use disorder:
In January 2020, CMS introduced the Medicare Opioid Treatment Program (OTP) benefit — the first time Medicare covered methadone treatment. The monthly bundled payment covers: methadone dispensing, take-home medication, individual and group counseling, toxicology testing, and other ancillary services. Learn more at the CMS OTP resource center.
Medicare is available to US citizens or permanent residents age 65+ who have paid Medicare taxes for at least 10 years (40 quarters). Younger individuals with qualifying disabilities who have received SSDI for 24 months, those with End-Stage Renal Disease (ESRD), or ALS also qualify automatically.
Enroll through the Social Security Administration at ssa.gov. If you're already on Medicare and need addiction treatment, call (844) 561-0606 — our specialists verify your exact Medicare benefits and identify Medicare-accepted accredited treatment programs in your area at no cost.
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