Reading Time: 4 minutes
Medicare can cover rehab for addiction treatment, including certain detox, inpatient rehab, outpatient therapy, and medication-assisted treatment programs, as long as the services are medically necessary and provided by a Medicare-approved provider or facility.
In 2026, Medicare continues to cover a wide range of behavioral health and substance use disorder (SUD) services under Part A, Part B and sometimes Part D.
However, your exact coverage depends on the level of care you need, whether you have Original Medicare or a Medicare Advantage plan and whether the facility accepts Medicare.
Does Medicare Cover Addiction Treatment?
Medicare covers many services that are used to diagnose, treat and support recovery from substance use disorders, including alcohol and drug addiction. This includes both inpatient and outpatient care, plus counseling and opioid use disorder treatment.
While federal mental health parity laws generally apply to private insurance and employer-sponsored plans, not original Medicare itself, they reflect the broader policy principle that substance use disorder treatment should be treated as essential behavioral health care.
In practice, Medicare explicitly includes SUD services in its behavioral health benefits.
Covered services may include:
- Substance use disorder evaluations
- Individual and group therapy
- Intensive outpatient programs (IOPs)
- Partial hospitalization (when medically appropriate)
- Inpatient hospital-based treatment
- Opioid use disorder treatment, including medications and counseling
What Medicare Part A Covers
Medicare Part A (hospital insurance) usually covers addiction treatment when you’re formally admitted as an inpatient to a hospital for detox, stabilization or other medically necessary treatment.
Inpatient Rehab
If you need 24/7 hospital-level care for withdrawal symptoms, psychiatric instability or a severe substance use disorder, Part A may cover your stay in a general hospital or psychiatric hospital.
This can include:
- Room and board
- Nursing care
- Medications administered during the stay
- Hospital services related to detox or stabilization
Hospital Detox
Medical detox may be covered under Part A when it happens as part of an inpatient hospital admission. This is typically the case when withdrawal could be dangerous, such as alcohol, benzodiazepine or severe opioid withdrawal that requires ongoing monitoring.
What Medicare Part B Covers
Medicare Part B covers many outpatient addiction services.
Outpatient Rehab
Medicare Part B can help pay for outpatient rehab, including:
- Therapy in a doctor’s office or clinic
- Hospital outpatient addiction treatment
- Community mental health center services
- Intensive outpatient programs (IOPs)
- Therapy and counseling
Medicare Part B may cover:
- Individual counseling
- Group therapy
- Psychiatric evaluation
- Behavioral health integration services
- Some telehealth behavioral health visits
- MAT services (including methadone and buprenorphine)
For opioid use disorder (OUD), Medicare Part B covers treatment through Medicare-enrolled opioid treatment programs (OTPs).
These bundled services can include:
- Methadone, buprenorphine, naltrexone, naloxone or nalmefene (when furnished through the OTP benefit)
- Medication dispensing/administration
- Substance use counseling
- Individual and group therapy
- Toxicology testing
- Intake and periodic assessments
- Peer recovery and care coordination services
What Medicare May Not Cover
Medicare does not cover every type of rehab program. Medicare may cover hospital-based inpatient treatment, but it often does not fully cover non-hospital, long-term residential rehab.
If the facility is not billing as a covered inpatient hospital or approved outpatient provider, coverage may be limited or unavailable.
Medicare typically won’t cover luxury rehab services, including resort-style amenities, private rooms (unless medically necessary), private-duty nursing or non-covered convenience services.
How to Find Rehab that Accepts Medicare
Before enrolling in treatment, you’ll want to confirm that the provider accepts Medicare, the level of care you’re receiving is medically necessary, the program is in-network (if you have Medicare Advantage), and that the medications you need are covered under Medicare Part B (OTP) or your Part D drug plan.
Does Medicare Cover Rehab FAQs
Does Medicare Pay for Detox?
Yes, Medicare detox coverage may be available if medically necessary. Inpatient hospital detox is usually covered under Part A, while some outpatient withdrawal management services may fall under Part B, depending on the setting.
Does Medicare Cover Suboxone?
Often, yes. Suboxone may be covered through a Medicare Part D prescription drug plan when prescribed for outpatient treatment. Buprenorphine can also be covered under Part B when furnished through a Medicare-enrolled OTP.
How Long Will Medicare Pay for Rehab?
There is no single fixed rehab length. Coverage depends on medical necessity, the setting and your benefit period. For inpatient hospital care under Part A, cost-sharing changes after day 60 and freestanding psychiatric hospitals have a 190-day lifetime limit.
Does Medicare Cover Residential Treatment?
Sometimes, but not all residential rehab qualifies. Medicare is more likely to cover hospital-based inpatient treatment than a standalone, long-term residential program.
What’s the Difference Between Part A and Part B for Rehab?
Part A generally covers inpatient hospital-based Medicare addiction treatment coverage, including hospital detox. Part B generally covers outpatient rehab, therapy, IOPs and opioid treatment program services.
