Paying for Rehab
Does Insurance Cover Rehab?
Does Insurance Cover Rehab for Drug and Alcohol Addiction?
Does insurance cover rehab? In most cases, yes. Marketplace plans must cover substance use disorder treatment as an essential health benefit, federal parity law keeps most plans from making addiction care harder to get than medical care, and Medicare Parts A, B and D cover inpatient, outpatient and medication treatment. SAMHSA lists 9,562 facilities that take private insurance and 6,596 that take Medicare (October 2026). Call the number on your card to confirm your own benefits.
Does Insurance Cover Rehab? Usually, Yes
SAMHSA says most health insurance plans cover addiction treatment, but not all do, and some cover only certain levels of care. Three federal rules do most of the work for you:
| Rule | Who it protects | What it requires |
|---|---|---|
| Affordable Care Act essential health benefits | Marketplace plans and other non-grandfathered individual and small-group plans | Must cover substance use disorder treatment, with no yearly or lifetime dollar limits |
| Mental Health Parity and Addiction Equity Act | Most employer plans with more than 50 workers, plus individual plans | Addiction benefits can’t come with stricter costs or limits than medical and surgical benefits |
| Medicare | People enrolled in Original Medicare or a Medicare plan | Parts A, B and D cover inpatient, outpatient and medication treatment for substance use disorders |
Medicaid, CHIP, VA health care and TRICARE cover treatment too. SAMHSA’s directory lists 9,562 facilities that take private insurance, 9,569 that accept Medicaid and 6,596 that accept Medicare (October 2026).
The ACA Makes Addiction Treatment an Essential Health Benefit
Under the Affordable Care Act, every Marketplace plan must cover 10 essential health benefits, and one of them is mental health and substance use disorder services. HealthCare.gov says all plans must cover:
- Behavioral health treatment, such as counseling and psychotherapy
- Mental and behavioral health inpatient services
- Substance use disorder treatment
Prescription drugs are another essential benefit, which matters if you need medication. More protections:
- Pre-existing conditions are covered. A plan can’t deny you or charge more because of a past substance use disorder, and coverage starts the day your plan does.
- No dollar caps. Plans can’t put yearly or lifetime dollar limits on these benefits.
- Every metal level counts, including Catastrophic plans.
Two exceptions to know: large employers that self-insure don’t have to provide essential health benefits (many do anyway), and older grandfathered plans aren’t required to. Ask your HR department if you aren’t sure which kind you have.
The Mental Health Parity and Addiction Equity Act
The Mental Health Parity and Addiction Equity Act of 2008 (MHPAEA) keeps health plans from treating addiction care as second-class. The Labor Department and CMS describe what it requires of covered plans:
- Similar costs. Copays, coinsurance and deductibles for addiction treatment must be in line with what you’d pay for medical or surgical care. Deductibles and out-of-pocket limits must count both kinds of care together.
- Similar limits. Visit or day limits can’t be stricter than for medical care.
- Similar hoops. Prior authorization and proof of medical necessity must be comparable. Most plans can’t require preauthorization for all addiction treatment.
- Matching benefit types. If a plan covers out-of-network or inpatient medical care, it must cover out-of-network or inpatient addiction care too.
- A right to information. Since 2021, plans must analyze and document how their authorization and network rules affect addiction benefits compared with medical ones, and make that analysis available to regulators on request.
What parity doesn’t do: CMS notes the law doesn’t by itself require a plan to cover addiction treatment. It says that if a plan covers it, the terms must be fair. The ACA fills that gap for individual and small-group plans by making the coverage mandatory. Parity applies to employer plans with more than 50 employees and to individual coverage; some states have stronger rules.
Medicare Coverage for Substance Use Treatment
Medicare covers substance use treatment across all its parts.
| Part | What it covers for substance use | What you pay (2026) |
|---|---|---|
| Part A (hospital) | Inpatient care in a general or psychiatric hospital, including methadone, buprenorphine and naltrexone given as an inpatient | $1,736 deductible per benefit period for days 1 to 60; $434 a day for days 61 to 90 |
| Part B (medical) | Outpatient counseling and therapy, intensive outpatient programs (9+ hours a week), partial hospitalization (20+ hours a week), doctor services in the hospital, and opioid treatment program services | 20% of approved costs after the deductible; no copay at enrolled opioid treatment programs |
| Part D (drugs) | Many outpatient prescriptions, which may include buprenorphine, naltrexone and naloxone | Depends on your plan |
Part A pays for up to 190 days in a freestanding psychiatric hospital over your lifetime. Part B also covers a yearly alcohol misuse screening, with up to 4 brief counseling sessions a year if needed. Medicare says opioid use disorder treatment continues as long as it’s reasonable and necessary.
If you get Medicare through a Medicare Advantage plan, check your plan’s materials or call the number on your card, since costs and networks differ. For free, unbiased help, SAMHSA points Medicare users to their State Health Insurance Assistance Program (SHIP). If you have both Medicare and Medicaid, Medicare says you pay nothing for opioid treatment services you get through Medicaid.
Where to Find It: Private Insurance by State
SAMHSA's FindTreatment.gov lists 9,562 substance use treatment facilities with this service (private insurance) across 53 states and territories, checked October 2026. Pick a state for its facilities, cities and treatment agency.
Medicaid, TRICARE and VA Coverage
Medicaid covers addiction treatment too, but SAMHSA says what it pays for and how much depends on your state. Some states expanded Medicaid to cover more low-income adults. State programs go by their own names, such as NJ FamilyCare in New Jersey or Turquoise Care in New Mexico. Read rehab that takes Medicaid for how to find a program and what states cover.
TRICARE may cover inpatient care, intensive outpatient and partial hospitalization programs, detox, and medication treatment, including opioid treatment programs. VA health care covers substance use treatment for enrolled veterans. Both are explained in addiction treatment for veterans.
If You Don’t Have Insurance Yet
Getting covered may be faster than you think, and it can matter even for care you’ve already had.
- Medicaid provides free or low-cost coverage to eligible low-income adults, families and children, pregnant women, older adults and people with disabilities, HealthCare.gov says. Medicaid may also help pay for medical care from the last 3 months, even if you weren’t enrolled at the time, depending on your income and expenses then.
- CHIP covers children, and in some states pregnant women, in families that earn too much for Medicaid.
- A Marketplace plan must include substance use treatment from the day coverage starts, even if you already have a substance use disorder.
Eligibility rules differ by state, and recent law changes limit which immigrants qualify for full Medicaid or CHIP. Check your state’s details on HealthCare.gov or with your state Medicaid office. SAMHSA’s National Helpline (1-800-662-4357) can refer you to state-funded treatment while you sort out coverage.
How to Check Your Benefits
SAMHSA suggests calling the number on the back of your insurance card. Many plans list a separate behavioral health number. Ask:
- Do you cover the type of treatment I need (detox, residential, intensive outpatient, outpatient, medication), and at what rate?
- What are my deductible, copay and coinsurance?
- How many days or visits are covered per year?
- Which facilities near me are in network? Choosing from that list helps avoid surprise costs.
- Do I need prior authorization, and who requests it?
- Do you have case managers, such as a nurse or social worker, who can help me for free?
You can also log in to your plan’s website to see your benefits. SAMHSA notes it can take several calls, so write down names and dates. You can ask a trusted person to help, and your insurer can tell you how to authorize them to speak for you. The Can I Pay for Treatment? checker shows what your type of coverage must include, and the treatment finder filters programs by the insurance they accept.
If Your Insurer Says No
A denial isn’t the final word. HealthCare.gov says your insurer must tell you why it denied a claim and how to dispute it, and you have two rights:
- Internal appeal. Ask the insurer to do a full and fair review. Urgent cases must be handled faster.
- External review. Take the case to an independent third party, so the insurer no longer has the final say.
If you think a denial breaks parity rules, for example stricter prior authorization for rehab than for surgery, get help. For employer plans, the Labor Department’s Benefits Advisors answer at 1-866-444-3272. CMS runs a parity help line at 1-877-267-2323, extension 6-1565.
How Much You’ll Pay With Insurance
Coverage doesn’t mean free. With a private plan, SAMHSA says you’re responsible for copays, coinsurance and deductibles, just as with any medical care, and your health information can’t be shared with your employer. A Marketplace plan caps your in-network costs for covered care at $10,600 for one person in 2026. How much rehab costs walks through the numbers, and if you have no coverage, free and low-cost rehab explains state-funded and sliding-fee programs. Before you sign up anywhere, how to choose a rehab you can trust explains how to check a program’s license.
Frequently Asked Questions
Does Insurance Cover Inpatient Rehab?
Usually, but check limits. SAMHSA notes some plans cover only certain levels of care. Marketplace plans must cover mental and behavioral health inpatient services, and parity rules require plans that cover inpatient medical care to cover inpatient addiction care on comparable terms. Medicare Part A covers inpatient hospital care. See inpatient rehab.
Can My Plan Require Prior Authorization for Rehab?
It can, but under parity the rules for approving addiction treatment can't be stricter than for medical and surgical care. The Labor Department says most plans can't require preauthorization for all mental health and substance use disorder treatment.
Will My Employer Find Out I Used My Insurance for Rehab?
SAMHSA says your health information is private and protected and cannot be shared with your employer. You'll still owe your plan's copays, coinsurance and deductible, just as for any doctor's visit.
Does Medicare Cover Rehab for Alcohol?
Yes. Medicare covers inpatient and outpatient treatment for substance use disorders, including alcohol, plus medications under Part D. Part B also covers a yearly alcohol misuse screening and up to 4 brief counseling sessions a year in primary care for adults who misuse alcohol but don't meet the criteria for dependence, free if your provider accepts assignment.
Does Insurance Cover Methadone or Suboxone?
Medicare covers methadone, buprenorphine and naltrexone, with no copay at enrolled opioid treatment programs after the Part B deductible. Marketplace plans must cover prescription drugs and substance use treatment, but check your plan's drug list. See medication for opioid use disorder.
Can Someone Call My Insurer for Me?
Yes. SAMHSA suggests asking a trusted person for help with the calls, and asking your insurer how to authorize that person to speak about your coverage and care.
More on Paying for Rehab
- Rehab That Takes MedicaidWhat Medicaid covers and how to find a program that accepts it
- Free and Low-Cost RehabState-funded treatment, sliding fees and no-charge programs
- Cost of RehabWhat drives the cost and how to pay less
- DetoxWhat medical detox involves, how long it takes and where to find it
- Inpatient RehabHow residential treatment works, short and long-term programs
- Outpatient RehabTreatment while you live at home, and who it suits
This guide explains treatment options in plain language from official sources. It isn't medical advice; a clinician can assess what care fits your situation.
Sources
- HealthCare.gov: Mental Health and Substance Abuse Coverage
- HealthCare.gov: What Marketplace Health Insurance Plans Cover
- U.S. Department of Labor: Mental Health and Substance Use Disorder Parity
- CMS: The Mental Health Parity and Addiction Equity Act
- Medicare: Mental Health and Substance Use Disorders
- Medicare: Opioid Use Disorder Treatment Services
- Medicare: Mental Health Care (Inpatient)
- SAMHSA: What Does Health Insurance Cover?
- HealthCare.gov: Appealing a Health Plan Decision
- Medicare: Alcohol Misuse Screenings and Counseling
- HealthCare.gov: Medicaid and CHIP
- SAMHSA FindTreatment.gov listing data, checked October 2026