Do Medicare and Medicaid Cover Addiction Treatment? 2026 Guide

Lasting recovery is built in structured care. Our residential addiction treatment in West Palm Beach supports every stage of it.

Yes. Medicare and Medicaid both cover addiction treatment, but they cover it in different ways. Medicare pays for hospital-based detox, outpatient therapy, intensive outpatient and partial hospitalization programs, and medications for opioid use disorder, but it generally does not pay for stays at a standalone residential rehab. Medicaid usually covers a broader range of services, including residential treatment in many states, though the exact benefits depend on your state and your plan.

This guide explains what each program covers in 2026, what you can expect to pay, how Florida Medicaid works for addiction treatment, and how to find a rehab that accepts your coverage.

Key takeaways

• Medicare Part A covers inpatient hospital care, Part B covers outpatient, intensive outpatient and partial hospitalization services, and Part D covers many prescriptions.
• Medicare does not cover non-hospital residential addiction treatment, and the federal parity law does not apply to Medicare.
• Medicaid covers nearly a quarter of U.S. adults with a substance use disorder and nearly half of adults with opioid use disorder.
• Every state Medicaid program must cover medications for opioid use disorder, a requirement Congress made permanent in 2024.
• Mandala Healing Center accepts Florida Medicaid and Medicaid managed care plans. Verify your benefits before you start.

Medicare vs. Medicaid: Addiction Treatment Coverage at a Glance

What Is Medicare?

Medicare is the federal health insurance program for people 65 and older, certain younger people with disabilities and people with end-stage renal disease. Because it is a federal program, the core benefits are the same in every state. Medicare has four parts:

• Part A (hospital insurance): inpatient stays in a general or psychiatric hospital.
• Part B (medical insurance): doctor visits, outpatient care, therapy and many outpatient programs.
• Part C (Medicare Advantage): private plans that bundle Parts A and B, and usually D, often with provider networks and prior authorization rules.
• Part D (prescription drug coverage): outpatient prescriptions.

Does Medicare Cover Addiction Treatment?

Yes. Medicare covers many substance use disorder services when they are medically necessary and delivered by a Medicare-approved provider.^[1]

Inpatient Treatment (Part A)

Part A covers care when you are formally admitted to a general or psychiatric hospital, such as inpatient medical detox for severe alcohol or drug withdrawal. In 2026 you pay a $1,736 deductible per benefit period, then $0 a day for days 1 to 60, $434 a day for days 61 to 90, and $868 a day for lifetime reserve days.^[2]

Stays in a freestanding psychiatric hospital are capped at 190 days over your lifetime.^[2] In 2025, the Medicare Payment Advisory Commission recommended that Congress eliminate that limit.^[3]

Outpatient, IOP and PHP (Part B)

Part B covers outpatient addiction treatment, including individual and group therapy, counseling and psychiatric care. It also covers two structured programs:^[1]

• Partial hospitalization (PHP): full-day treatment for people who need at least 20 hours of services a week.
• Intensive outpatient (IOP): part-time treatment for people who need at least 9 hours of services a week. You don’t need to qualify for inpatient care first.^[4]

After the Part B deductible, you typically pay 20% of the Medicare-approved amount, plus daily coinsurance for IOP in a hospital outpatient department or community mental health center.^[4]

Opioid Use Disorder Treatment

Medicare covers medication for opioid use disorder (methadone, buprenorphine and naltrexone), along with counseling, drug testing, care management and peer recovery support. At a Medicare-enrolled opioid treatment program, you pay no copayments, though the Part B deductible applies. Naloxone is covered under Part B and may be covered under Part D.^[5]

Prescription Drugs (Part D)

Part D plans cover many outpatient prescriptions used in addiction and mental health treatment, including buprenorphine and naltrexone. Check your plan’s formulary for costs and any prior authorization rules.^[5]

What Medicare Doesn’t Cover

• Standalone residential rehab. Medicare does not cover non-hospital residential treatment for substance use disorders, even though it is a standard level of care.^[6]
• Many community-based programs. Medicare also doesn’t cover outpatient treatment at many community addiction facilities that Medicaid pays for.^[6]
• Parity protections. The Mental Health Parity and Addiction Equity Act, which requires addiction benefits to be comparable to medical benefits, does not apply to Medicare.^[6]

These gaps matter. One national study found only 11% of Medicare beneficiaries with a past-year substance use disorder received treatment, and a third of those who didn’t get care cited cost as a barrier.^[7] A 2025 study found fewer than 40% of Medicare beneficiaries with opioid use disorder received care that met national quality standards, and Medicare lagged behind Medicaid on every measure that could be compared.^[8]

Medicare Advantage

Medicare Advantage plans must cover everything Original Medicare covers, but they use provider networks and often require prior authorization. In the 2025 study, Medicare Advantage performed worse than Original Medicare on six of eight opioid treatment quality measures.^[8] If you have an Advantage plan, call the plan to confirm which treatment centers are in network before you enroll in a program.

What Is Medicaid?

Medicaid is a health coverage program for people with low incomes, funded jointly by the federal government and the states. Each state runs its own program within federal rules, so eligibility and benefits vary.

Under the Affordable Care Act, states can expand Medicaid to nearly all adults with incomes up to 138% of the federal poverty level. As of 2026, 41 states, including Washington, D.C., have adopted the expansion and 10 have not.^[9] Florida has not expanded Medicaid. That means Florida Medicaid mainly covers children, pregnant women, parents and caretakers with very low incomes, older adults, and people with disabilities, including people who receive Supplemental Security Income (SSI).

Medicaid is one of the most important payers of addiction care in the country. It covers nearly one-quarter of U.S. adults with a substance use disorder and nearly half of adults with opioid use disorder.^[10]

Does Medicaid Cover Addiction Treatment?

Yes. All state Medicaid programs cover substance use disorder treatment, though the services and limits differ. Medicaid commonly covers:

• Screening and assessment
• Medical detox
• Outpatient therapy, IOP and PHP
• Residential treatment, which at least 38 states and D.C. cover at some level^[6]
• Medications for opioid use disorder
• Treatment for co-occurring mental health conditions
• Case management and recovery support services

Medication for Opioid Use Disorder Is Required

Every state Medicaid program must cover all FDA-approved medications for opioid use disorder, along with related counseling. The 2018 SUPPORT Act created this requirement with a 2025 end date, and the Consolidated Appropriations Act of 2024 made it permanent.^[11] Research shows this coverage matters: Medicaid expansions between 2017 and 2023 were linked to meaningful increases in buprenorphine use.^[12]

Parity Protections in Medicaid

The federal parity law applies to Medicaid managed care plans, the Children’s Health Insurance Program (CHIP) and Medicaid alternative benefit plans.^[13] These plans generally cannot impose stricter limits on addiction treatment, such as tighter visit caps or prior authorization rules, than they apply to comparable medical care.

The IMD Exclusion and Residential Treatment

A long-standing federal rule called the IMD exclusion limits Medicaid payment for adults ages 21 to 64 in residential facilities with more than 16 beds. Many states use Section 1115 waivers to work around it. In January 2026, Florida applied for a waiver that would let Medicaid cover residential addiction treatment in these facilities for up to 90 days, up from the current 15-day limit.^[14]

Florida Medicaid and Addiction Treatment

Most Florida Medicaid members get their benefits through private managed care plans in the Statewide Medicaid Managed Care program, often called “state insurance.” Each plan has its own network of providers and its own prior authorization process.

Mandala Healing Center accepts Florida Medicaid and Medicaid managed care plans. Our admissions team can check your plan, explain what it covers and handle authorization with your plan so you can focus on getting ready for treatment. See the state insurance plans we accept.

Upcoming Medicaid Changes in 2026 and 2027

The 2025 federal budget reconciliation law requires states to apply work requirements to Medicaid expansion adults, with enforcement starting in 2027.^[15] People with a substance use disorder are exempt, and states must use claims and clinical records to confirm exemptions so enrollees don’t have to submit extra paperwork.^[15] Because Florida did not expand Medicaid, these rules mainly affect members in expansion states. If you have Medicaid in another state, make sure your diagnosis is documented and respond quickly to any renewal notices.

How the ACA and Parity Laws Protect Addiction Coverage

The Affordable Care Act made substance use disorder services one of the essential health benefits that individual and small-group plans, including Medicaid expansion coverage, must include. The Mental Health Parity and Addiction Equity Act requires covered plans to treat addiction benefits no more restrictively than medical benefits. Together, these laws are the reason most private and Medicaid plans now cover rehab. Remember that parity does not apply to Original Medicare.^[6]

How to Find a Rehab That Accepts Medicare or Medicaid

1. Find your card. Note whether you have Original Medicare, a Medicare Advantage plan, a Medicaid managed care plan, or both Medicare and Medicaid.
2. Call the number on your card. Ask which levels of care are covered, whether you need prior authorization and which treatment centers are in network.
3. Call the treatment center. Ask whether it accepts your specific plan, not just “Medicaid” or “Medicare,” and whether it can verify your benefits for you.
4. Ask about costs. Find out about deductibles, copays, coinsurance and any services that won’t be covered.
5. Use free tools. FindTreatment.gov lists facilities by location and payment type, and the SAMHSA National Helpline (1-800-662-4357) offers free, confidential referrals 24/7.

Learn more in our guide on how to find a rehab center that accepts your insurance.

If You Have Both Medicare and Medicaid

People who qualify for both programs are called “dual eligible.” Medicare pays first, and Medicaid can pick up costs Medicare doesn’t cover. For opioid use disorder treatment, dual-eligible members pay nothing for services received through their state Medicaid program.^[5] Dual-eligible beneficiaries also tend to receive higher-quality opioid treatment than those with Medicare alone.^[8]

Frequently Asked Questions

Does Medicare cover drug and alcohol rehab?

Yes, partly. Medicare covers inpatient hospital detox, outpatient therapy, intensive outpatient programs, partial hospitalization and medications for opioid use disorder. It does not cover standalone residential rehab.

Does Medicare cover inpatient rehab for addiction?

Medicare Part A covers inpatient care in a general or psychiatric hospital. It does not cover non-hospital residential programs, which are what most people mean by “inpatient rehab.”

How long will Medicare pay for addiction treatment?

Outpatient and medication treatment can continue as long as it is medically necessary. Inpatient hospital coverage follows Part A benefit periods, and freestanding psychiatric hospital stays are limited to 190 days in your lifetime.

Does Medicaid cover inpatient rehab in Florida?

Florida Medicaid plans can cover detox, residential and inpatient addiction treatment when it is medically necessary, usually with prior authorization. Stays in larger residential facilities are currently limited to about 15 days, and Florida has asked federal regulators to extend that to 90 days.

Does Medicaid cover Suboxone and methadone?

Yes. Every state Medicaid program is required to cover all FDA-approved medications for opioid use disorder, including buprenorphine (Suboxone), methadone and naltrexone.

Does Medicare Advantage cover rehab?

Yes. Medicare Advantage plans cover at least what Original Medicare covers and sometimes more, but you usually need to use in-network providers and get prior authorization.

Can I have both Medicare and Medicaid?

Yes. If you qualify for both, Medicare pays first and Medicaid can cover many remaining costs, including some services Medicare doesn’t cover.

Do I need a referral or prior authorization?

Original Medicare doesn’t require referrals, but many programs need a doctor’s certification of medical necessity. Medicaid managed care and Medicare Advantage plans usually require prior authorization for detox, residential, PHP and IOP. The treatment center can typically request it for you.

What if the rehab I want doesn’t accept my plan?

Ask your plan for an in-network list, ask the facility about single-case agreements, or look at other ways to pay for rehab.

Will Medicaid work requirements affect my addiction treatment?

The new requirements start in 2027 and apply to Medicaid expansion adults. People with a substance use disorder are exempt. Florida did not expand Medicaid, so most Florida Medicaid members are not affected.

Use Your Medicaid Benefits for Addiction Treatment at Mandala Healing Center

Cost should not stand between you and recovery. Mandala Healing Center in West Palm Beach accepts Florida Medicaid and Medicaid managed care plans and offers medical detox, residential treatment, partial hospitalization, intensive outpatient care and dual diagnosis treatment. If you have Medicare or another type of coverage, our admissions team will check your benefits and walk you through your options.

Call 866-922-3654 or verify your insurance online to get started. You can also learn what to expect during the intake process.

References

1. Medicare.gov. Mental health & substance use disorder services. U.S. Centers for Medicare & Medicaid Services. https://www.medicare.gov/coverage/mental-health-substance-use-disorder
2. Medicare.gov. Inpatient mental health care. U.S. Centers for Medicare & Medicaid Services. https://www.medicare.gov/coverage/mental-health-care-inpatient
3. Medicare Payment Advisory Commission. Eliminating Medicare’s coverage limits on stays in freestanding inpatient psychiatric facilities. March 2025. https://www.medpac.gov/recommendation/eliminating-medicares-coverage-limits-on-stays-in-freestanding-inpatient-psychiatric-facilities/
4. Medicare.gov. Mental health care: outpatient intensive outpatient program services. https://www.medicare.gov/coverage/mental-health-care-outpatient-intensive-outpatient-program-services
5. Medicare.gov. Opioid use disorder treatment services. https://www.medicare.gov/coverage/opioid-use-disorder-treatment-services
6. Commentary on Medicare’s gaps in addiction treatment coverage. STAT. May 13, 2024. https://www.statnews.com/2024/05/13/medicare-dangerous-gaps-addiction-treatment-coverage/
7. Parish WJ, Mark TL, Weber EM, Steinberg DG. Substance use disorders among Medicare beneficiaries: prevalence, mental and physical comorbidities, and treatment barriers. Am J Prev Med. 2022;63(2):225-232. https://doi.org/10.1016/j.amepre.2022.01.021
8. Mark TL, Parish WJ, Steinberg D, Sun MJ, Fujita M. The quality of opioid use disorder treatment in Medicare is low and lags behind Medicaid. Health Aff (Millwood). 2025;44(9):1086-1091. https://doi.org/10.1377/hlthaff.2025.00207
9. KFF. Status of state Medicaid expansion decisions. Updated October 2026. https://www.kff.org/medicaid/status-of-state-medicaid-expansion-decisions/
10. Saunders H, Hinton E. Medicaid mental health and substance use: expansion trends and the fiscal pressure ahead. KFF. May 13, 2026. https://www.kff.org/medicaid/medicaid-mental-health-and-substance-use-expansion-trends-and-the-fiscal-pressure-ahead/
11. Georgetown University Center for Children and Families. Consolidated Appropriations Act, 2024: Medicaid and CHIP mental health and substance use disorder provisions explained. May 2024. https://ccf.georgetown.edu/2024/05/13/consolidated-appropriations-act-2024-medicaid-and-chip-mental-health-and-substance-use-disorder-provisions-explained/
12. Siegal N, Crystal S, Miles J, et al. Medicaid expansion and buprenorphine dispensing in early vs recent expansion states. JAMA Netw Open. 2026. https://doi.org/10.1001/jamanetworkopen.2025.59803
13. Medicaid.gov. Behavioral health parity. U.S. Centers for Medicare & Medicaid Services. https://www.medicaid.gov/medicaid/benefits/behavioral-health-services/parity
14. Florida Agency for Health Care Administration. Florida Institutions for Mental Disease Section 1115 demonstration application. January 16, 2026. https://www.medicaid.gov/medicaid/section-1115-demonstrations/downloads/fl-inst-mntl-disase-pndng-aplctn-01162026.pdf
15. The Commonwealth Fund. How will states implement the behavioral health exemption to Medicaid work requirements? 2025. https://www.commonwealthfund.org/blog/2025/how-will-states-implement-behavioral-health-exemption-medicaid-work-requirements

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Clinically Reviewed

Mandala Clinical Team

This page was prepared by Mandala Healing Center and reviewed by our clinical team, the licensed medical and behavioral health professionals who provide detox and treatment at our West Palm Beach facility. We review it regularly so it reflects current clinical guidance.

Last reviewed: November 2, 2026

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Content on this page is written and reviewed according to our editorial policy. It is for informational purposes only and is not a substitute for professional medical advice. If you have questions about your medication, talk to your prescriber before making any changes.