Is addiction treatment covered by insurance?
Detox, rehab, outpatient programs, and medications for addiction. Here’s how each kind of plan usually handles it.
- Employer or MarketplaceUsually covered
Yes, treatment for drug or alcohol use is covered, and plans can’t limit it more than medical care.
More details
Plans cover detox, inpatient and residential rehab, outpatient programs, and medications such as buprenorphine and naltrexone, subject to medical-necessity review.
Cost: Outpatient visit copays or inpatient cost sharing, matching medical benefits.
- Original MedicareUsually covered
Yes, Medicare covers addiction treatment, including opioid treatment programs.
More details
covers methadone and other medications through opioid treatment programs, plus counseling; covers inpatient care.
Cost: Generally 20% of the Medicare-approved amount after the Part B deductible.
- Medicare AdvantageUsually covered
Yes, Medicare covers addiction treatment, including opioid treatment programs.
More details
covers methadone and other medications through opioid treatment programs, plus counseling; covers inpatient care. Medicare Advantage plans must cover this too, but set their own copays and often require in-network providers and prior authorization.
Cost: Your plan’s copay or coinsurance: check the Evidence of Coverage.
- MedicaidUsually covered
Yes, Medicaid is the largest payer for addiction treatment.
More details
States must cover medications for opioid use disorder.
What usually has to be true
- A live-in (residential) program needs the plan’s approval first.
- Use a licensed, in-network facility.
Good to know
- SAMHSA’s free helpline is 1-800-662-4357.
Related
- Inpatient mental health care · Psychiatric hospitalization, residential, and intensive programs.
- Therapy & counseling · Outpatient psychotherapy with a psychologist, LCSW, LPC, or MFT.
Sources
Typical rules for 2026 plans, checked against these sources on October 20, 2026. Your plan’s own documents decide.
- 1Mental health and substance use disorder coverage
HealthCare.gov
Marketplace plans cover behavioral health treatment such as psychotherapy and counseling, inpatient mental and behavioral health services, and substance use disorder treatment.
- 2Mental Health and Substance Use Disorder Parity
U.S. Department of Labor
For plans subject to parity, covered mental health benefits generally cannot face more restrictive financial requirements or treatment limitations than comparable medical benefits.
- 3Opioid use disorder treatment
Medicare.gov
Part B covers opioid use disorder treatment through opioid treatment programs, including medication such as methadone and buprenorphine, counseling, and testing.
- 4Alcohol misuse screening and counseling
Medicare.gov
Part B covers one alcohol misuse screening per year and up to four brief counseling sessions at no cost when criteria are met.
- 5Compare Original Medicare and Medicare Advantage
Medicare.gov
Medicare Advantage plans cover everything Original Medicare covers (except hospice, which Original Medicare continues to pay), usually use provider networks, often require referrals or prior authorization, and may offer extra benefits such as dental, vision, and hearing.
- 6Mandatory and optional Medicaid benefits
Medicaid.gov
States must cover mandatory benefits such as inpatient and outpatient hospital care, physician services, laboratory and X-ray services, home health, and nursing facility care; many other benefits, including adult dental, vision, and prescription drugs coverage details, are state options.
General information about how coverage usually works, not a decision about your plan. Your plan documents and insurer have the final word.