Medicare covers some alcohol and drug rehab, but not all programs and not all costs

Medicare Part A (hospital insurance) covers inpatient rehab stays at hospitals and certified facilities. Medicare Part B (medical insurance) covers outpatient counseling and some medications used in treatment. However, Medicare does not cover all types of programs — it will not pay for residential rehab at a non-medical facility, even if that facility specializes in addiction treatment. What you pay depends on which part of Medicare covers the service, how long you stay, and whether you have reached your deductible.

The coverage rules are strict about what counts as a medical rehab program. A facility must be a hospital with a dedicated addiction medicine unit, or a skilled nursing facility certified by Medicare, or an outpatient clinic run by a hospital or licensed provider. A private rehab resort, a standalone addiction center without hospital affiliation, or a residential program that does not have a physician on staff will not be covered, even if it is excellent and even if your doctor recommends it.

Key Takeaways

  • Medicare Part A covers inpatient rehab at hospitals and certified skilled nursing facilities, but you pay a daily copay after day 20 and the full cost after day 100 in a benefit period.
  • Medicare Part B covers outpatient counseling and addiction medicine visits, and you pay 20 percent of the cost after you meet your deductible.
  • Medicare does not cover residential rehab at non-medical facilities, even if they specialize in addiction treatment and your doctor refers you.
  • Medications like buprenorphine and naltrexone used in addiction treatment are covered under Part B if prescribed by a participating doctor.
  • You should ask your doctor whether a specific rehab program is Medicare-certified before you enroll, because the facility's reputation does not may provide Medicare will pay.

What Medicare Part A covers for inpatient rehab

Part A covers a hospital stay for detoxification and medical management of withdrawal, and it covers inpatient rehab at a skilled nursing facility if your doctor orders it as medically necessary. The facility must be Medicare-certified. You pay nothing for the first 20 days if you have already met your Part A deductible (which resets each year). From day 21 to day 100, you pay a daily copay — the amount changes each year but is typically between $190 and $200 per day. After day 100 in a benefit period, Medicare stops paying and you pay the full cost.

A benefit period begins the day you enter the hospital and ends 60 days after you leave. If you go back into rehab within 60 days, those days count toward the same 100-day limit. If you wait more than 60 days, a new benefit period starts and your day count resets to 1. This matters if you need a second stay — you will have another 100 days of coverage, but only if the break between stays is long enough.

Part A does not cover room and board at a residential facility that is not a hospital or skilled nursing facility. It does not cover counseling-only programs, even if they are run by a hospital system. It does not cover outpatient detox or outpatient rehab under Part A — those fall under Part B.

What Medicare Part B covers for outpatient treatment

Part B covers office visits with an addiction medicine doctor or psychiatrist, individual and group counseling sessions with a licensed therapist or counselor, and psychiatric evaluation. The provider must be enrolled in Medicare and must accept Medicare payment. You pay 20 percent of the approved amount after you meet your annual Part B deductible (typically $240 per year). There is no limit on the number of visits you can have in a year.

Part B also covers medications used to treat alcohol and opioid use disorder. Buprenorphine (Suboxone), naltrexone (Vivitrol), and acamprosate (Campral) are covered when prescribed by a participating doctor. Naltrexone injections are covered. You pay your normal Part B cost-sharing — usually 20 percent after the deductible — unless the medication is on your plan's formulary as a preferred drug, in which case you may pay less.

Outpatient programs that combine counseling, medication management, and peer support are covered under Part B as long as each service is billed separately by a Medicare provider. A program that bundles services and bills as a single package may not be covered. Ask the program's billing department whether they bill Medicare for each service separately before you enroll.

Medications for addiction treatment covered by Medicare

Medicare Part B covers three medications with strong evidence for treating alcohol use disorder: naltrexone (a pill or monthly injection), acamprosate (a pill), and disulfiram (Antabuse, a pill that causes illness if you drink). Naltrexone is also used for opioid use disorder. Buprenorphine, a partial opioid agonist, is covered for opioid use disorder and is increasingly used off-label for alcohol use disorder. All require a prescription from a doctor enrolled in Medicare.

Your out-of-pocket cost depends on whether the medication is on your Part D drug plan's formulary and at what tier. Some plans cover these medications with a low copay; others require prior authorization or place them on a higher tier with a higher copay. Call your plan before you start the medication to find out what you will pay. If the cost is high, ask your doctor whether a generic version is available or whether the manufacturer offers a patient information program.

How to learn about a specific rehab program is Medicare-covered

Call the rehab program and ask directly: "Are you Medicare-certified?" If they say yes, ask for their Medicare provider number. Then call Medicare at 1-800-MEDICARE (1-800-633-4227) and give them the provider number. Medicare can tell you whether the facility is currently certified and what services are covered. Do not rely on the facility's word alone — some facilities claim to accept Medicare but are not actually certified.

If the program is a hospital, ask which unit handles addiction treatment and whether that unit is Medicare-certified. If it is a skilled nursing facility, ask whether they have a dedicated addiction medicine program or whether they treat addiction as part of general medical care. If it is an outpatient clinic, ask whether the doctors and counselors are enrolled in Medicare and whether they bill Medicare directly.

If a program tells you it is not Medicare-certified, ask whether they can refer you to a Medicare-certified program nearby. Many communities have both options, and your doctor can help you weigh the differences. Some people choose a non-covered program because they believe it is a better fit, and they pay out of pocket. That is a choice you can make, but you should know the cost upfront.

What you pay: deductibles, copays, and coinsurance

For inpatient rehab under Part A, you pay your annual deductible (typically $1,600 per year) once per benefit period, then nothing for days 1 to 20, then a daily copay for days 21 to 100. The daily copay is one-quarter of the Part A deductible and changes each year. After day 100, you pay 100 percent of the cost.

For outpatient services under Part B, you pay your annual deductible (typically $240 per year) once per year, then 20 percent of the approved amount for each visit or medication. There is no annual limit on how much you can spend on Part B services. If you have a Medigap or Medicare Advantage plan, your copays and coinsurance may be lower.

If you have a Medicare Advantage plan (Part C), the rules are different. Advantage plans must cover at least what Original Medicare covers, but they can have different copays, deductibles, and networks. Call your Advantage plan to ask what it covers for rehab and what you will pay. Some Advantage plans cover residential rehab that Original Medicare does not, so it is worth asking.

When to ask your doctor for a referral and what to bring

Ask your doctor for a referral to a rehab program if you or someone you support is struggling with alcohol or drug use. Your doctor can order inpatient rehab if medically necessary, and they can refer you to outpatient programs. Bring your Medicare card and any other insurance cards you have. Bring a list of all medications you take, including over-the-counter drugs and supplements. Bring your insurance information so the program can verify your coverage before you start.

If you are considering a specific program, ask your doctor whether they think it is appropriate for your situation and whether they will support your treatment there. Some programs work closely with Medicare providers; others do not. Your doctor's involvement makes a difference in whether Medicare will cover the stay and whether the program will coordinate your care with your other doctors.

Frequently Asked Questions

Does Medicare cover 30-day rehab programs?

Medicare Part A covers inpatient rehab for up to 100 days in a benefit period if the facility is a hospital or Medicare-certified skilled nursing facility. A 30-day stay would be covered under Part A if medically necessary and ordered by your doctor. You would pay your deductible plus daily copays from day 21 onward. If the program is not Medicare-certified, it is not covered.

What if I need rehab but my doctor says it is not medically necessary?

Medicare Part A requires a doctor's order stating that inpatient rehab is medically necessary. If your doctor will not order it, you can ask for a second opinion from another doctor, or you can pay out of pocket for a program that does not require Medicare certification. Some people also start with outpatient treatment under Part B, which does not require a medical necessity information.

Will Medicare pay for rehab at a luxury or resort-style facility?

No. Medicare only covers rehab at hospitals and Medicare-certified skilled nursing facilities. Luxury facilities, resort-style programs, and standalone addiction centers are not covered by Medicare, even if they are excellent and even if your doctor recommends them. You would pay the full cost out of pocket or through private insurance.

Can I use Medicare to pay for rehab while I am still working?

Yes. Medicare covers rehab based on medical need, not on whether you are working. If your doctor orders inpatient rehab or refers you to outpatient treatment, Medicare will cover it the same way it would for anyone else. You will still pay your deductibles and copays.

What happens if I leave rehab early?

If you leave inpatient rehab before your doctor says you are ready, Medicare will still pay for the days you were there. You will owe your deductible and daily copays for those days. Leaving early does not change your coverage or your out-of-pocket costs for the days you completed. However, it may affect your ability to return to the same program or to another program if you need rehab again soon.