Medicare does cover addiction treatment, including detox, counseling, and medication-assisted therapy. Millions of older adults and people with disabilities rely on this coverage to access care without facing overwhelming out-of-pocket costs.

Understanding exactly what Medicare pays for can help you or a loved one get the right treatment faster. This guide breaks down coverage by plan type, costs, and how to find in-network providers.

Key Takeaways

  • Medicare Part A and Part B both cover substance use disorder treatment services, including inpatient and outpatient care.
  • According to SAMHSA, adults aged 65 and older represent a growing share of people needing substance use treatment, yet many remain unaware of their Medicare benefits.
  • Medicare covers FDA-approved medications for opioid use disorder, including buprenorphine and methadone, through specific plan components.
  • Out-of-pocket costs vary depending on whether you have Original Medicare or a Medicare Advantage plan.
  • A referral from your primary care provider is often the fastest way to connect with covered addiction services.

How Medicare Covers Addiction Treatment

Medicare divides its coverage across several parts, and addiction treatment benefits are spread across more than one of them. Knowing which part covers which service helps you avoid unexpected bills and delays in care.

Medicare Part A: Inpatient Addiction Treatment

Part A covers inpatient hospital stays, which includes medically supervised detox and residential treatment when a doctor certifies medical necessity. You must be formally admitted to a Medicare-certified facility for these benefits to apply.

Part A also covers care in a psychiatric facility for mental health conditions that often co-occur with addiction. The lifetime limit for inpatient psychiatric care is 190 days, so planning matters for long-term treatment needs.

Medicare Part B: Outpatient Addiction Services

Part B covers outpatient addiction treatment, including individual and group counseling, substance use disorder screenings, and annual wellness visits that include mental health assessments. These services are widely available through community clinics and physician offices.

Part B also covers opioid treatment programs (OTPs) that provide bundled care, including medication, counseling, and toxicology testing. This bundled benefit was introduced to make opioid use disorder treatment more accessible and coordinated.

Medicare Part D: Prescription Coverage for Addiction Medications

Part D covers prescription medications used in addiction treatment, including naltrexone and certain formulations of buprenorphine. Coverage details vary by plan, so reviewing your formulary each year is important.

If you are enrolled in an Opioid Treatment Program under Part B, methadone for opioid use disorder is covered under Part B instead of Part D. This distinction matters when calculating your actual costs.

Medicare Advantage and Addiction Treatment Benefits

Medicare Advantage plans, also called Part C, must cover everything Original Medicare covers. Many plans go further, offering additional behavioral health benefits or lower copays for substance use services.

Some Medicare Advantage plans include care coordination programs specifically for members managing addiction or co-occurring mental health conditions. Contacting your plan directly is the best way to understand exactly what extra benefits are available to you.

What Medicare Does Not Cover for Addiction Treatment

Medicare does not cover every type of addiction service. Long-term residential rehabilitation programs that are not medically necessary are generally excluded, as are most non-clinical wellness programs and peer support services billed as standalone services.

Room and board at residential treatment facilities are also not covered by Medicare, even when clinical services at the same facility are covered. This is a common source of confusion when comparing total treatment costs.

Costs and Cost-Sharing for Medicare Addiction Treatment

Under Original Medicare, you typically pay 20% of the Medicare-approved amount for outpatient services after meeting your Part B deductible. In 2025, the Part B deductible is $257 per year, according to Medicare.gov.

For inpatient care under Part A, you pay a deductible per benefit period rather than per day. After 60 days in the hospital, daily coinsurance charges apply. A Medicare Supplement plan can help reduce these costs significantly.

How to Find Medicare-Covered Addiction Treatment Providers

The Medicare.gov provider directory allows you to search for covered treatment facilities and counselors by location and plan type. You can also call 1-800-MEDICARE for personalized guidance on finding in-network providers near you.

Your primary care physician can also refer you to addiction specialists who accept Medicare. Starting with your doctor ensures your treatment plan is documented and coordinated, which can improve outcomes and reduce barriers to ongoing care.

Frequently Asked Questions

Does Medicare cover alcohol use disorder treatment?

Yes. Medicare Part B covers alcohol misuse screenings once per year at no cost if your provider accepts Medicare assignment. It also covers up to four brief face-to-face counseling sessions per year for people who screen positive. Inpatient alcohol detox is covered under Part A when medically necessary.

Can I get mental health and addiction treatment covered at the same time?

Yes. Medicare covers co-occurring disorder treatment, meaning you can receive both mental health and substance use services simultaneously. Many outpatient programs are designed to treat both conditions together, and Medicare recognizes integrated care as a covered benefit under Part B and in some Advantage plans.

Is telehealth addiction counseling covered by Medicare?

Medicare expanded telehealth coverage significantly in recent years. As of 2025, many behavioral health and substance use counseling services are available via telehealth under Medicare Part B. You do not need to be in a rural area to qualify, making remote addiction care more accessible than ever before.

What if I cannot afford my Medicare cost-sharing for addiction treatment?

Low-income Medicare beneficiaries may qualify for the Medicare Savings Program or Extra Help, which reduce or eliminate premiums, deductibles, and copays. Medicaid dual eligibility can also cover costs that Medicare does not. Your State Health Insurance Assistance Program (SHIP) offers free counseling to help you apply.

Bottom Line

Medicare covers a broad range of addiction treatment services, from inpatient detox to outpatient counseling and medication-assisted therapy, making recovery more financially accessible for millions of Americans.

For more guidance on navigating treatment options and building a recovery support network, ccswn.org offers educational resources designed to help individuals and families move forward with confidence.

References

  1. Centers for Medicare and Medicaid Services. (2025). Medicare coverage of substance use disorder services. https://www.medicare.gov/coverage/substance-use-disorder-services
  2. Substance Abuse and Mental Health Services Administration. (2023). Results from the 2022 National Survey on Drug Use and Health. U.S. Department of Health and Human Services.
  3. Centers for Medicare and Medicaid Services. (2025). 2025 Medicare Parts A and B premiums, deductibles, and coinsurance amounts. https://www.cms.gov/newsroom/fact-sheets/2025-medicare-parts-b-premiums-and-deductibles
  4. National Institute on Drug Abuse. (2022). Principles of drug addiction treatment: A research-based guide (3rd ed.). National Institutes of Health.