Medicare 30-day rehab coverage is more limited than many people expect. Medicare covers a wide range of addiction treatment, but Original Medicare generally does not pay for stays at non-hospital residential rehab centers, which is where many 30-day programs take place.
This guide explains what each part of Medicare covers, where the gaps are and how Medicare Advantage can change your options.
What Medicare Covers for Addiction Treatment
According to Medicare.gov, Medicare covers substance use disorder care across several parts:
| Medicare part | What it can cover |
|---|---|
| Part A | Inpatient hospital care, including inpatient detox and care in a psychiatric hospital |
| Part B | Outpatient therapy, partial hospitalization, intensive outpatient programs and opioid treatment programs |
| Part D | Prescription medications, including many used for addiction treatment |
Does Medicare 30-Day Rehab Coverage Include Residential Care?
Usually not under Original Medicare, which is the biggest gap in Medicare 30-day rehab coverage. Medicare pays for inpatient care in hospitals, but most residential rehab centers are not hospitals, so a typical 30-day residential stay is not covered. Some programs combine a covered hospital-based detox with outpatient or partial hospitalization care that Medicare does cover.
Inpatient care in a freestanding psychiatric hospital is limited to 190 days over your lifetime.
Medicare Advantage and Medicare 30-Day Rehab
Medicare Advantage plans must cover everything Original Medicare covers, and some add broader behavioral health benefits that may include residential treatment. Rules, networks and prior authorization vary by plan. See our Humana rehab coverage and UnitedHealthcare rehab coverage guides for examples.
What Medicare 30-Day Rehab Costs You
Part A has a deductible for each benefit period, followed by daily coinsurance for longer hospital stays. Part B usually has a yearly deductible and 20% coinsurance for most outpatient services. A Medigap policy can help with these costs. Medicare Advantage plans set their own copays and have a yearly out-of-pocket limit for in-network care.
If You Have Medicare and Medicaid
People with both Medicare and Medicaid may get extra help. Medicaid can cover some services Medicare does not, including residential treatment in many states. See Medicaid 30-day rehab.
How to Check Your Medicare 30-Day Rehab Benefits
- Confirm whether you have Original Medicare or a Medicare Advantage plan
- Ask the facility if it is Medicare-certified and what level of care it provides
- For Medicare Advantage, ask about residential coverage and prior authorization
- Ask for a written estimate of your costs
- Or verify your insurance with our team
If Medicare will not cover the program you want, see low-cost rehab options.
Frequently Asked Questions
Does Medicare cover 30-day rehab?
Original Medicare covers inpatient hospital detox and many outpatient programs, but it generally does not cover non-hospital residential rehab stays.
Does Medicare Advantage cover residential rehab?
Some Medicare Advantage plans offer residential treatment benefits with prior authorization. Check your plan.
Does Medicare cover methadone or Suboxone?
Medicare covers opioid treatment programs under Part B and many addiction medications under Part D.
Is there a limit on Medicare psychiatric hospital stays?
Yes. Medicare covers up to 190 days of inpatient care in a freestanding psychiatric hospital over your lifetime.
What if I have both Medicare and Medicaid?
Medicaid may cover services Medicare does not, including residential treatment in many states.
Related Pages
Sometimes the quickest way to get clear answers is a short phone conversation. Whatever you decide, taking the time to ask questions and verify details up front tends to make the process smoother.