Does Medicare Cover Drug and Alcohol Rehab?

Medical Reviewer

Sendra Yang

About the Reviewer

If you have Medicare and you are trying to get treatment for drinking or drug use, the answer to the coverage question is yes with one large exception. Medicare pays for outpatient counseling, intensive outpatient care, partial hospitalization, hospital-based detox and inpatient treatment, and medication for opioid use disorder. What it does not pay for is the kind of program most people picture when they hear the word rehab: a residential facility where you live on site for thirty days.

That gap catches families off guard, and it is worth knowing about before you start making calls. It is also not the end of the road. Several of the things Medicare does cover deliver the same treatments those residential programs provide, in a different setting, at a lower cost to you.

In This Article:

• Does Medicare cover addiction treatment?
• Which kind of rehab does Medicare mean?
• What you will pay for addiction treatment with Medicare in 2026
• If you have opioid use disorder, treatment may cost you nothing
• What a Medicare Advantage plan changes, and what it cannot
• The 190-day limit, and when it does not apply
• If you have both Medicare and Medicaid
• Getting treatment by phone or video
• How to check that a program actually bills Medicare
• If you are helping a parent, spouse, or someone else
• If Medicare will not cover what you need
• Frequently asked questions

Medicare

You are here. How Parts A, B and D split addiction treatment between them.

Medicaid

What your state must cover, and what it may choose to cover.

TRICARE or VA

Military and veteran coverage, and which one to use when you have both.

Private or marketplace

Employer plans and plans bought on the Marketplace.

No insurance

The order of operations when you have no coverage at all.

Paying for someone else

Using your plan for a family member, and what you can find out.

Does Medicare cover addiction treatment?

Medicare covers addiction treatment at most levels of care, including outpatient therapy, intensive outpatient programs, partial hospitalization, and detox or inpatient treatment delivered inside a hospital. The significant gap is non-hospital residential treatment, which Original Medicare does not cover at all. Coverage is split across Part A for inpatient care, Part B for outpatient care, and Part D for prescriptions you fill yourself.

Addiction professionals describe treatment as a continuum, from weekly counseling at one end to round-the-clock medical care at the other. The American Society of Addiction Medicine, usually shortened to ASAM, organizes that continuum into levels. Medicare’s coverage lines up against those levels unevenly, and the unevenness is the whole story.

The intensive outpatient line deserves a second look, because the setting restriction is where people get stuck. Medicare added intensive outpatient coverage in January 2024, and it pays for that care at a hospital, a community mental health center, a federally qualified health center, or a rural health clinic. A freestanding addiction treatment center offering the same program is not on that list. Two facilities can run an identical schedule and only one of them can bill Medicare for it.

You are not dealing with a rare situation. Roughly 1.7 million Medicare beneficiaries were estimated to have a substance use disorder in 2022, about 8% of beneficiaries aged 65 and older, and overdose deaths among people 65 and older more than tripled between 2000 and 2020.⁹

For what each of these levels of care actually involves, see our guide to types of addiction treatment. For how these costs compare against other ways of paying, see what addiction treatment costs.

Which kind of rehab does Medicare mean?

The word rehab covers two different things in Medicare’s rules, and they follow different coverage rules, different day counts, and different cost sharing. Addiction treatment is one. Recovery after surgery, a stroke, or an injury is the other. Answers you find about one will mislead you about the other.

Most Medicare guidance that uses the word rehab is describing post-hospital care: a skilled nursing facility or an inpatient rehabilitation facility where you regain strength and mobility after a medical event. That benefit has its own well-known numbers. In a skilled nursing facility following a qualifying hospital stay, you owe nothing for days 1 through 20, then $217 per day for days 21 through 100 in a benefit period.¹

Addiction treatment does not run on that track. If you have read that Medicare covers 100 days of rehab, that figure describes skilled nursing care and tells you nothing useful about getting help for drinking or drug use. Search results mix the two constantly, so when you find an answer, check which kind of care it is describing before you rely on it.

The distinction matters practically in one more way. Because addiction treatment inside a hospital is billed as inpatient hospital care rather than as post-acute rehabilitation, the numbers that apply to you are the hospital numbers in the next section.

What you will pay for addiction treatment with Medicare in 2026

With Original Medicare in 2026 you owe $1,736 per benefit period before Part A pays anything toward a hospital stay, and 20% of the approved amount for most outpatient care after a $283 annual Part B deductible. There is no annual limit on that 20%, which is the largest financial risk in a long course of outpatient treatment.

These are the amounts you owe, not what a facility charges and not what Medicare pays a provider. All figures are 2026 amounts published by the Centers for Medicare and Medicaid Services, and every one of them changes each January.¹

A benefit period is not a calendar year. It starts the day you are admitted as an inpatient and ends after you have gone 60 consecutive days without inpatient hospital or skilled nursing care. That means the $1,736 deductible can hit you more than once in the same year if you are admitted, discharged, and admitted again after a long enough gap. If your coverage looks like it may run out partway through treatment, see what to do when Medicare runs out.

The line worth sitting with is the 20%. Original Medicare has no annual ceiling on what you pay in coinsurance. A course of intensive outpatient treatment running several days a week for two months generates a 20% share on every service, and nothing stops that total from climbing. This is the specific reason supplemental coverage matters more for addiction treatment than for a one-off procedure. A Medigap policy can pick up Part A and Part B cost sharing, and a Medicare Advantage plan carries an annual out-of-pocket maximum that Original Medicare does not.

Timing matters a great deal if you go the Medigap route. Federal law gives you a six-month Medigap open enrollment period that starts the first month you are both 65 or older and enrolled in Part B. During those six months an insurer cannot refuse you, charge you more, or make you wait because of your health history, including a substance use disorder.^15,16 It is a one-time window and there is no annual replacement for it. Once it closes, insurers in most states can require medical underwriting, which means they can ask about your health, quote you a higher price, or decline you outright.

Roughly 21 states offer some additional annual guaranteed-issue access, though it is usually limited to switching between Medigap plans with equal or lesser benefits rather than buying one for the first time. The rules differ substantially from state to state and they change. Your State Health Insurance Assistance Program, a free counseling service that exists in every state, can tell you what applies where you live.

If you have Medicare through a disability and are under 65

This is the part that most guidance skips, and it changes the arithmetic. Federal law generally does not require insurers to sell Medigap policies to people under 65, so if you qualified for Medicare through a disability or end-stage renal disease, you may not be able to buy a Medigap policy at all until you turn 65. Some states require insurers to offer it anyway, and what is available varies by state and by plan letter.

That matters here because the under-65 group is a substantial share of the people looking for this information. In 2020, 25% of Medicare beneficiaries under 65 who qualified through disability and had opioid use disorder received medication for it, against 8% of beneficiaries aged 65 and older.¹²

If Medigap is closed to you, a Medicare Advantage plan with an annual out-of-pocket maximum may be the only way to put a ceiling on what a long course of outpatient treatment costs you. The next section covers what those plans can and cannot change. Check with your State Health Insurance Assistance Program before assuming either option is or is not open to you.

If you have opioid use disorder, treatment may cost you nothing

Medicare Part B covers opioid use disorder treatment at an enrolled opioid treatment program as a single bundled benefit, and there is no copay for it once you have met the Part B annual deductible. The bundle includes the medication, counseling, individual and group therapy, and drug testing. This is the most generous addiction benefit Medicare offers, and most people on Medicare do not know it exists.

An opioid treatment program, often shortened to OTP, is a federally certified clinic licensed to dispense medication for opioid use disorder. Medicare began paying these programs in January 2020 through a weekly bundled payment rather than billing each service separately. From your side, that bundle means one benefit and no copay.²

To show what the benefit is worth: in 2026, Medicare pays an enrolled program $277.29 for a weekly episode of methadone treatment and $296.57 for a weekly episode of oral buprenorphine treatment, each covering medication, dispensing, counseling, individual and group therapy, and toxicology testing.³ Your share of that is the Part B deductible once a year, and then nothing.

Which medication you can get, and where, follows a rule worth understanding before you make calls. Medications for opioid use disorder, shortened to MOUD, reach you by two different routes:

• Methadone for opioid use disorder is only available through an opioid treatment program. It cannot be filled at a pharmacy under Part D for this purpose.
• Buprenorphine and naltrexone are available either through an opioid treatment program or from a doctor’s office or pharmacy.

That distinction has a direct cost consequence. If you receive buprenorphine through an enrolled opioid treatment program, you pay no copay. If you receive the same medication from a doctor’s office, you pay copays plus the Part B deductible. The setting decides whether you pay, not the medicine.

Medicare also covers these services when an opioid treatment program delivers them from a mobile unit rather than a fixed clinic, which matters if the nearest program is a long drive.

The gap between what Medicare covers and who uses it is wide, and it is wider for older beneficiaries: in 2020, 8% of beneficiaries aged 65 and older with opioid use disorder received medication for it, against 25% of younger beneficiaries who qualify through disability, and 57% of people on Medicaid.¹²

What a Medicare Advantage plan changes, and what it cannot

A Medicare Advantage plan must cover everything Original Medicare covers for addiction treatment, so it cannot exclude a service Original Medicare pays for. What it can change is which providers you use, whether you need approval before starting, and what each visit costs you. It also caps your annual out-of-pocket spending, which Original Medicare does not.

Medicare Advantage, sometimes called Part C, is Medicare coverage delivered by a private company. Treat Original Medicare’s coverage as the floor. If Original Medicare pays for intensive outpatient treatment, your Advantage plan has to pay for it too.

The differences that will actually affect you are procedural. Advantage plans use provider networks, and going outside the network can leave you paying the full cost. Many require prior authorization before an inpatient admission or a course of intensive outpatient care, which means someone at the plan has to approve it first. Ask about both before you commit to a program.

The annual out-of-pocket maximum is the genuine advantage for addiction treatment specifically. Because Original Medicare puts no ceiling on Part B coinsurance, a long outpatient course has no defined worst case. An Advantage plan does.

That cap carries extra weight if you are under 65 and on Medicare through a disability, since Medigap may not be available to you at all. In that situation an Advantage plan is often the only route to a defined maximum, and the trade you are making is a network and prior authorization in exchange for a ceiling. Weigh it against whether the programs you want to use are in the plan’s network before you switch.

Advantage is not the workaround for residential treatment. This is worth saying plainly, because a lot of guidance implies it is. Fewer than 1% of Medicare Advantage plans offer residential substance use treatment as a supplemental benefit.¹⁰ If residential care is what you need, switching to an Advantage plan is very unlikely to get it covered.

One more finding worth weighing at enrollment. In 2020, fewer than 40% of Medicare beneficiaries with opioid use disorder received care that met recognized quality measures, and Medicare Advantage performed worse than fee-for-service Medicare on six of the eight measures studied.¹¹

Finally, a common assumption that does not hold here. The federal parity law requiring insurers to treat mental health and addiction benefits on equal footing with medical benefits does not apply to Medicare. It covers most commercial plans and Medicaid managed care. Advocacy groups have asked Congress to extend it to Medicare and that has not happened. If you have private insurance instead, see how parity works there.

The 190-day limit, and when it does not apply

Medicare Part A pays for a maximum of 190 days of inpatient care in a freestanding psychiatric hospital across your entire lifetime, and those days never reset. The limit does not apply to a Medicare-certified psychiatric unit inside a general or critical access hospital. Which building you are admitted to decides whether your days count against a cap you can never get back.

A freestanding psychiatric hospital treats only mental health and substance use conditions. A distinct part psychiatric unit is a physically separate section of an acute care or critical access hospital that provides the same inpatient care. Medicare treats them differently, and the difference is large.

In a freestanding psychiatric hospital, you have 190 covered days for life. Once they are used, Part A will not pay for another day there regardless of medical need. In a psychiatric unit inside a general hospital, your stay counts against the ordinary benefit period limits in the cost table above, and no lifetime cap applies.

If you or a family member is approaching the cap, ask the treatment team whether the local options are freestanding psychiatric hospitals or psychiatric units within general hospitals. Transferring to a general hospital unit lets covered care continue under the standard rules.

The cap has critics inside the government. The Medicare Payment Advisory Commission recommended eliminating it in its March 2025 report to Congress.¹³ Until Congress acts, it applies.

If you have both Medicare and Medicaid

If you qualify for Medicare and Medicaid at the same time, Medicare pays first and Medicaid covers much of what Medicare leaves behind. If you are in the Qualified Medicare Beneficiary group, federal law bars any Medicare provider from billing you for Medicare deductibles, coinsurance, or copays at all.

People who have both programs are called dual eligible. For addiction treatment, this is the strongest financial position available on Medicare, and many people who qualify do not know they do.

The protection worth knowing by name is the Qualified Medicare Beneficiary group, shortened to QMB. It is one of four Medicare Savings Programs, run by state Medicaid agencies, that pay Medicare premiums and cost sharing for people with limited income. Medicare providers and suppliers, including pharmacies, must not bill someone in the QMB group for Part A or Part B deductibles, coinsurance, or copayments. The prohibition applies to Original Medicare and Medicare Advantage providers alike, it holds whether or not the provider accepts Medicaid, and it has been federal law since 1989.⁴

If you have QMB and a provider bills you for a Medicare deductible or coinsurance, that is an error to dispute rather than a charge to pay. Keep your enrollment notice and show it when you get care. If you have already paid, the provider is required to refund you.

The federal baseline for QMB in 2026 is monthly income at or below 100% of the federal poverty level, which works out to about $1,350 for one person and $1,824 for a married couple after a $20 income disregard is applied, with countable resources up to $9,950 and $14,910 respectively. Your home and one car do not count toward the resource limit.¹⁴

Do not stop at those numbers, because states are allowed to be more generous and many are. Massachusetts sets its equivalent threshold at 190% of the federal poverty level and applies no asset test. New York uses 138% and no asset test, and has folded its middle tier into QMB entirely, so people who would only get their premium covered elsewhere get full cost-sharing protection there. Mississippi applies no resource test. Minnesota uses higher asset limits than the federal default. If your income looks slightly too high, apply anyway and let the state tell you.

Two related programs sit just above QMB on income and cover the Part B premium only rather than all cost sharing, at roughly $1,616 and $1,816 a month for one person in 2026.¹⁴ If you are over the QMB line, they are still worth applying for.

Enrolling in any Medicare Savings Program also qualifies you automatically for Extra Help, the Part D low-income subsidy that reduces what you pay for prescriptions. You apply through your state Medicaid agency, not through Medicare or Social Security.

For how Medicaid covers addiction treatment on its own terms, including the state-by-state variation, see our guide to Medicaid coverage for rehab.

Getting treatment by phone or video

Medicare’s coverage of behavioral health care delivered by video or phone is permanent, works anywhere in the country including your own home, and carries no requirement that you live in a rural area. Audio-only sessions are allowed when video is not available to you or you do not want to use it.

This is a genuine and often overlooked advantage. Congress made behavioral telehealth a permanent Medicare benefit in the Consolidated Appropriations Act of 2021, removing the older restrictions that required patients to be in a rural area and at a clinical site. Substance use treatment counts as behavioral health for this purpose.

The audio-only allowance has conditions attached. Your clinician has to be capable of providing video, and audio-only applies when you cannot use video or do not consent to it. It works for new and established patients. If you do not have reliable internet, a camera, or the confidence to use one, a phone call is a covered option.

Medicare normally requires an in-person visit within six months of starting home-based behavioral telehealth and annually after that. That requirement is currently suspended through 31 December 2027.

Worth knowing so you are not thrown by conflicting headlines: behavioral telehealth is permanent, while general medical telehealth runs on temporary extensions that Congress renews periodically. News about telehealth coverage lapsing usually concerns the general category, not mental health and addiction care.

For clinical virtual options including virtual intensive outpatient programs and telehealth prescribing of buprenorphine, see types of addiction treatment.

How to check that a program actually bills Medicare

Asking a treatment program whether it takes Medicare is not specific enough to get a reliable answer. Ask whether it bills Medicare for the exact service you need, because a program can accept Medicare for one level of care and not another. The setting restrictions in the first section are the reason this matters: a program can honestly say it takes Medicare and still be unable to bill for the intensive outpatient care you were told to get. Get the answer before your first appointment, not after.

1. Ask whether they are enrolled in Medicare and bill Medicare directly. Enrolled is the operative word. A program that is not enrolled cannot bill Medicare no matter how it answers a general question.
2. Ask which service they bill. Outpatient therapy, intensive outpatient, partial hospitalization, and opioid treatment program services are separate benefits with separate rules.
3. If you need intensive outpatient care, ask what kind of facility they are. Medicare pays for it at a hospital, community mental health center, federally qualified health center, or rural health clinic. If they are none of those, Medicare will not cover it there.
4. If you have Medicare Advantage, ask whether they are in network and whether prior authorization is required. Get the answer in writing if you can, and ask who submits the authorization request.
5. Ask what you will owe and whether your Part B deductible has been met this year. A program’s billing office can usually check the deductible for you.

To find candidates, the Medicare Care Compare tool at medicare.gov lists Medicare-enrolled providers, and SAMHSA’s treatment locator lets you filter by payment type accepted. If you have a Medicare Advantage plan, your plan’s own directory is the starting point, though directories go stale and calling to confirm is worth the ten minutes. You can also browse programs by state and city in our directory.

If you are helping a parent, spouse, or someone else

If you are arranging treatment for another adult on Medicare, two things will shape what you can do: whether you have written permission to speak with their plan and providers, and whether they agree to treatment. Sort the permission out before you start making calls, because most offices cannot talk to you without it.

Medicare will not discuss someone else’s coverage, claims, or care with you unless that person has authorized it in writing. Medicare has its own authorization form, and a Medicare Advantage plan or an individual provider may require its own on top of that. Getting these signed in advance saves a great deal of frustration during an intake call.

One thing to expect that surprises many families: addiction treatment records carry stronger federal protection than most other medical records. A general medical release your parent signed years ago may not cover them, and a program may decline to confirm even that someone is enrolled. That is the law working as designed rather than an obstruction. For what those rules protect and what they mean for you, see treatment privacy and job protection.

If the person you are trying to help is not willing to accept treatment yet, that is a different problem from a coverage problem, and there are approaches worth understanding before you push. See helping someone else get treatment.

If Medicare will not cover what you need

When Medicare will not pay for the care you need, the usual next moves are checking whether you also qualify for Medicaid, looking at a hospital-based program instead of a residential one, or getting help with the amount Medicare leaves you. Which applies depends on your income and what your treatment team recommends.

Residential treatment is the most common sticking point, and there are two realistic responses. The first is to ask your assessing clinician whether a hospital-based program or an intensive outpatient program would meet your clinical needs, since both are covered and both deliver real treatment. The second is to check your Medicaid eligibility, because a dual-eligible reader has options a Medicare-only reader does not.

Congress has been asked to close this gap. The Residential Recovery for Seniors Act would create a new Part A benefit covering residential addiction treatment for older adults and people with disabilities.⁹ It has bipartisan sponsorship and has not passed.

Where to go from here:

• Medicaid coverage for addiction treatment, if your income may qualify you
• Covering what your insurance will not, for the amount left over
• What to do when Medicare runs out, if coverage may end partway through treatment
• Free and low-cost treatment programs, including state-funded and nonprofit options
• What addiction treatment costs, to compare across ways of paying

Frequently asked questions

Does Medicare cover inpatient rehab for addiction?

Medicare covers detox and inpatient addiction treatment when it is delivered inside a hospital, paid under Part A with a deductible per benefit period. It does not cover residential treatment at a non-hospital facility, which is what most people mean by inpatient rehab. Fewer than 1% of Medicare Advantage plans add residential treatment as a supplemental benefit.

Does Medicare cover alcohol rehab?

Yes, at the same levels of care as any other substance use disorder. Outpatient counseling, intensive outpatient programs, partial hospitalization and hospital-based detox are all covered, and medications for alcohol use disorder are covered under Part B or Part D depending on the drug and the setting. Non-hospital residential treatment is the exception in either case.

How much does addiction treatment cost with Medicare?

In 2026 a hospital stay costs $1,736 per benefit period, and most outpatient care costs 20% of the Medicare-approved amount after a $283 annual Part B deductible. Original Medicare sets no annual cap on that 20%. Opioid treatment program services are the exception and carry no copay once the deductible is met.

Does Medicare cover methadone or Suboxone?

Yes. Methadone for opioid use disorder is covered only when it is dispensed through a Medicare-enrolled opioid treatment program rather than a pharmacy. Buprenorphine, the active ingredient in Suboxone, and naltrexone are available either through an opioid treatment program or from a prescriber. Receiving the medication through an enrolled program means no copay, while receiving it at a doctor’s office means copays plus the deductible.

What is the Medicare 190-day limit?

It is a lifetime maximum of 190 covered days of inpatient care in a freestanding psychiatric hospital, and those days never reset. It does not apply to a Medicare-certified psychiatric unit inside a general or critical access hospital, and it is not a general limit on inpatient addiction treatment. The Medicare Payment Advisory Commission recommended eliminating it in March 2025.

You Might Like

• What to Do When Medicare Runs Out for Rehab
• Does Medicaid Cover Drug and Alcohol Rehab?
• How Much Does Rehab Cost?
• How to Cover What Insurance Doesn’t Pay for Rehab

Sources

1. Centers for Medicare and Medicaid Services. 2026 Medicare Parts A and B Premiums and Deductibles. 14 November 2025.
2. Centers for Medicare and Medicaid Services. Opioid Treatment Programs: Billing and Payment.
3. Centers for Medicare and Medicaid Services. Final Rule Payment Rates for Opioid Treatment Programs, 2026.
4. Centers for Medicare and Medicaid Services. Prohibition on Billing Qualified Medicare Beneficiaries. MLN7936176, September 2025.
5. Medicare.gov. Inpatient Hospital Care Coverage.
6. Medicare.gov. Opioid Use Disorder Treatment Services.
7. Medicare.gov. Mental Health and Substance Use Disorder Services.
8. Center for Medicare Advocacy. Medicare Coverage of Mental Health and Substance Abuse Services.
9. US Senate Special Committee on Aging. The Residential Recovery for Seniors Act. 2024.
10. Legal Action Center. Cutting Off Care: Medicare’s 190-Day Lifetime Limit. 2025.
11. Health Affairs. The Quality of Opioid Use Disorder Treatment in Medicare Is Low and Lags Behind Medicaid. 2025.
12. US Department of Health and Human Services, Office of Inspector General. Fewer than One in Five Medicare Enrollees Received Medication to Treat Their Opioid Use Disorder. OEI-02-24-00430, April 2025.
13. Medicare Payment Advisory Commission. Eliminating Medicare’s Coverage Limits on Stays in Freestanding Inpatient Psychiatric Facilities. Report to Congress, March 2025.
14. Social Security Administration. POMS HI 00815.023, Medicare Savings Programs Income and Resource Limits. February 2026.
15. Medicare.gov. Medigap: Get Ready to Buy.
16. Medicare Interactive, Medicare Rights Center. Medigap Purchasing Details: Enrollment Periods, Guaranteed Issue and More.
17. Behavioral Health News. Recovery Works When Coverage Does: The Lifesaving Impact of Medicare’s IOP Expansion. 2026.

Medical Reviewer

Sendra Yang

About the Reviewer