Medicaid is the single largest payer for addiction treatment in the United States, covering over 90 million low-income Americans. Under the Mental Health Parity and Addiction Equity Act (MHPAEA) and the Affordable Care Act (ACA), all state Medicaid programs must cover substance use disorder treatment as an essential health benefit. In the 41 Medicaid expansion states plus DC, most adults earning up to 138% of the federal poverty level qualify — often at $0 cost for treatment.

Medicaid is administered jointly by federal and state governments, meaning benefits vary somewhat by state. But the full SUD treatment continuum is covered everywhere. Whether you need medical detox, inpatient rehab, medication-assisted treatment (MAT), intensive outpatient (IOP), or dual diagnosis treatment — Medicaid covers it. Call (561) 523-0379 and we can check your eligibility and benefits in real time at no cost.

What Medicaid Covers for Drug Rehab — Level by Level

Medical Detox

Medicaid covers medically supervised detox for alcohol, opioids, and benzodiazepines in all 50 states. Detox is treated as a medical necessity — coverage cannot be arbitrarily denied if clinical criteria are met under ASAM guidelines. Most Medicaid members pay $0. Prior authorization is typically required and your facility handles it. Call (561) 523-0379 to find Medicaid-accepting detox centers with same-day availability.

Inpatient Rehab

Medicaid covers inpatient residential rehab in all 50 states. Length-of-stay limits and facility eligibility vary by state. The IMD exclusion (see note) historically limited coverage in larger facilities, but most states now have waivers. Typical covered stays: 28–90 days depending on clinical need and state policy. Prior authorization required — your facility handles this.

Medication-Assisted Treatment (MAT)

All state Medicaid programs must cover buprenorphine (Suboxone) under federal law. Methadone at licensed Opioid Treatment Programs (OTPs) is covered in all states. Naltrexone (Vivitrol) is covered in most states. MAT is often $0 for Medicaid members. According to SAMHSA, MAT reduces opioid overdose death risk by approximately 50%.

Intensive Outpatient (IOP) and PHP

IOP (9–19 hours/week) is covered in all 50 states — one of the most accessible levels of care for Medicaid members. PHP (30+ hours/week) is covered in most states. Both allow patients to maintain work and family responsibilities while receiving structured treatment. Cost for Medicaid members: often $0.

Does Medicaid Cover Dual Diagnosis Treatment?

Yes. Under MHPAEA, Medicaid must cover co-occurring mental health and SUD treatment at parity. Integrated dual diagnosis treatment — addressing addiction alongside depression, anxiety, PTSD, bipolar disorder, or other mental health conditions — is covered at the same level as either condition treated separately.

How Much Does Rehab Cost With Medicaid?

For most Medicaid members, addiction treatment costs $0. Medicaid covers the full cost for qualifying individuals. Some states charge small copayments ($1–$4/visit) for outpatient services. Inpatient and residential treatment is typically fully covered. Not sure if you qualify? Call (561) 523-0379 — we check eligibility for free.

Medicaid Expansion vs Non-Expansion States

As of 2026, 41 states plus DC have expanded Medicaid under the ACA. In non-expansion states including Alabama, Florida, Georgia, Kansas, Mississippi, South Carolina, Tennessee, Texas, Wisconsin, and Wyoming — Medicaid for childless adults is very limited. Check your state's expansion status at KFF's Medicaid expansion tracker. If you live in a non-expansion state, call (561) 523-0379 for alternative free and low-cost treatment options.

Find Medicaid-Accepting Drug Rehab by State

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How to Access Medicaid Addiction Treatment Benefits

To qualify for Medicaid, you generally need to meet income requirements (varies by state), be a US citizen or qualifying immigrant, and be a state resident. In the 41 expansion states plus DC, most adults under 65 earning up to 138% of the federal poverty level (~$20,120/year for a single person) qualify regardless of other factors.

Check eligibility at Healthcare.gov or your state Medicaid agency. In non-expansion states (TX, FL, GA, and others), eligibility for childless adults is very limited — call (561) 523-0379 for alternative free treatment options if you don't qualify.

Once enrolled, you can use Medicaid at any Medicaid-enrolled treatment provider. Call (561) 523-0379 and we'll identify every Medicaid-accepting accredited program in your area at no cost — often with same-day availability.