Paying for treatment

Insurance Coverage for Drug and Alcohol Rehab

What your plan covers depends less on the name on your card than on the details of the plan itself. These guides explain how each major insurer handles detox, residential and outpatient treatment, how prior authorization works, and how to confirm a program takes your plan before treatment begins.

Updated September 15, 2026

Cigna Aetna Blue Cross Blue Shield UnitedHealthcare Anthem Blue Cross UMR

Cites Federal Sources: Department of Labor, CMS, HealthCare.gov and SAMHSA
General Information Only: Not medical, legal or insurance advice
Coverage Is Plan-Specific: Confirm benefits with your insurer and the program

Start with your card

Coverage Guides by Insurer

Each guide covers the same ground — parity, levels of care, authorization, costs — with the details that are specific to that insurer.

How plans review treatment

Levels of Care and What Authorization Usually Involves

Coverage is generally decided one level of care at a time, and higher levels are usually reviewed more closely. Your plan document and your insurer are the authority on your own benefit.

Medical detox — 24-hour medical setting
Almost always requires prior authorization, often granted day by day while withdrawal is actively managed.
Residential / inpatient — Live-in program
Typically authorized in blocks of days, with concurrent review to continue the stay.
Partial hospitalization (PHP) — Most of the day, home at night
Usually requires authorization; plans often expect a step down from a higher level of care.
Intensive outpatient (IOP) — Several sessions a week
Authorization requirements vary widely by plan; some plans review, some do not.
Standard outpatient — Weekly counseling or medication visits
Commonly the least restricted level, though visit limits and copays still apply.

Authorization rules differ by plan and can change. Read the full levels of care guide.

Plain language

Insurance Terms You May Come Across

General definitions of terms often used by plans. How each one applies depends on your policy.

Deductible: Generally, what you pay out of pocket before a plan begins paying its share. Plans typically reset it each plan year.
Coinsurance: Your percentage of the bill after the deductible is met — for example, you pay 20% and the plan pays 80%.
Copay: A flat amount per visit or per day, set by the plan, separate from coinsurance.
Out-of-pocket maximum: A limit some plans set on what you pay in a plan year for covered in-network care. Amounts and what counts toward it vary by plan.
In network: A program that has a contract with your plan. Out-of-network care usually costs far more, and some plans cover none of it.
Prior authorization: Approval some plans ask for before treatment begins. When a plan requires it, a service may be denied without it.
Concurrent review: The plan re-checking during treatment whether continued care is still justified, which is how stays get extended or ended.
Medical necessity: A plan's own standard for whether a level of care is warranted. Criteria differ from plan to plan.
Explanation of benefits (EOB): Not a bill. It is the plan's statement of what was billed, what it paid, and what it left to you.
Appeal: A process for challenging a denial. Deadlines are often short, and an external review may be available after internal appeals.

Three Things That Hold True on Every Plan

Parity Is the Baseline

When a plan covers mental health and substance use treatment, federal law requires its limits to be no more restrictive than the limits on comparable medical care. That applies to costs, day limits and authorization rules alike.

The Plan Decides, Not the Carrier

Two people holding the same insurer's card can have very different benefits. Employer plan design, self-funded versus fully insured status, and plan line all change what is covered and what it costs.

Verify Coverage Twice

Confirm network status and authorization with your insurer, then confirm the same with the program's benefits verification staff. A facility reporting that it accepts private insurance is not confirmation that it takes your plan.

Before treatment begins

What to Ask When You Call Your Insurer

Most coverage surprises come from a question nobody asked. Read these off the page, write down the answers, and note the date and the name of the representative. Then ask the program’s benefits verification staff the same questions and compare the two answers before treatment begins.

Why the Two Answers Can Differ

An insurer can confirm that a benefit exists while the program is out of network for your specific plan, and a program can accept your insurer without being contracted for the level of care you need. Both statements can be true at once, and the gap between them is where an unexpected bill comes from.

See what facilities report by level of care

Question 1. Is substance use disorder treatment covered under my plan, and at which levels of care?
Question 2. Is prior authorization required for detox, residential or partial hospitalization?
Question 3. Is this specific program in network for my plan, under this exact plan ID?
Question 4. What is my remaining deductible, my coinsurance, and my out-of-pocket maximum this year?
Question 5. If care is denied, what is the appeal process and the deadline to file?

Every other route in

If You Have Medicaid, Medicare, or No Coverage at All

Commercial insurance is not the only route into treatment, and it is not even the most common one on its own. Among the 15,953 substance use treatment facilities in SAMHSA’s 2024 national survey:

78.3%

Private insurance

12,494 of 15,953 facilities report accepting

77.8%

Medicaid

12,418 of 15,953 facilities report accepting

52.6%

Medicare

8,397 of 15,953 facilities report accepting

Source: SAMHSA National Substance Use and Mental Health Services Survey, 2024 analytic universe of 15,953 facilities. Reported acceptance describes what a facility told SAMHSA. It does not establish coverage of a specific service, network status, or the start of treatment. See the full analysis.

Medicaid

Medicaid is administered state by state within federal rules, so covered substance use services and eligibility differ depending on where you live. Federal rules do require state Medicaid programs to cover FDA-approved medications for opioid use disorder. Nearly as many facilities report accepting Medicaid as report accepting private insurance.

Medicare

Medicare covers substance use disorder treatment, including inpatient care, outpatient services and medication for opioid use disorder through certified opioid treatment programs. Fewer facilities report accepting it than the other two payers, so verifying acceptance before treatment begins matters more here.

No Insurance

Facilities commonly report payment routes that do not depend on a plan: sliding fee scales based on income, payment assistance, state-funded treatment slots supported by federal block grant funding, and self-pay arrangements. These are negotiated directly with the program, so ask when you call rather than assuming cost rules you out.

Military and Veterans Coverage

TRICARE covers substance use disorder treatment for eligible service members, retirees and families, and the VA provides addiction treatment for enrolled veterans. Facilities report military insurance acceptance separately from commercial plans.

SAMHSA’s National Helpline — 1-800-662-4357 — is a free, confidential, 24/7 federal referral line, available regardless of insurance status, and FindTreatment.gov is the federal treatment locator. Neither is affiliated with this site.

Keep Reading

This page is for informational purposes and is not medical, legal or insurance advice. Coverage terms, network participation and authorization requirements vary by plan and can change. Confirm your plan with both your insurer and the facility before treatment begins.