Paying for treatment · A reader’s guide
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.
01Start with your card
Coverage Guides by Insurer
Every insurer has one detail that changes how its plans handle addiction treatment. Here it is up front, with the full guide one click away.
- UnitedHealthcare01Key FactBehavioral Health Runs Through OptumOptum publishes the ASAM Criteria-based rules it uses for addiction treatment decisions.Read the Guide
- Blue Cross Blue Shield02Key FactNot One Insurer, but 33 Independent CompaniesBenefits depend on which BCBS company issues the plan. Federal employees have their own program.Read the Guide
- Aetna03Key FactOne Name, Several Very Different Kinds of PlansEmployer, Marketplace, Medicare Advantage and Aetna Better Health plans each follow their own rules.Read the Guide
- Cigna04Key FactBehavioral Health Is Administered by EvernorthCigna describes substance use benefits mainly through employer plans, and says details vary by employer.Read the Guide
- Anthem Blue Cross05Key FactBehavioral Health Is Managed Through CarelonCarelon says it uses ASAM criteria for substance use treatment unless custom criteria apply.Read the Guide
- UMR06Key FactYour Employer Writes the Benefit, Not UMRUMR administers self-funded employer plans, so the plan document is what controls.Read the Guide
02How 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.
Read the Full Levels of Care Guide- 01
Medical detox
24-hour medical setting
Almost always requires prior authorization, often granted day by day while withdrawal is actively managed.
- 02
Residential / inpatient
Live-in program
Typically authorized in blocks of days, with concurrent review to continue the stay.
- 03
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.
- 04
Intensive outpatient (IOP)
Several sessions a week
Authorization requirements vary widely by plan; some plans review, some do not.
- 05
Standard outpatient
Weekly counseling or medication visits
Commonly the least restricted level, though visit limits and copays still apply.
- Ordered from most to least intensive. Authorization rules differ by plan and can change.
03Plain 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.
·The constants
Three Things That Hold True on Every Plan
1
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.
2
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.
3
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.
04Before 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.
- Question 01Is substance use disorder treatment covered under my plan, and at which levels of care?
- Question 02Is prior authorization required for detox, residential or partial hospitalization?
- Question 03Is this specific program in network for my plan, under this exact plan ID?
- Question 04What is my remaining deductible, my coinsurance, and my out-of-pocket maximum this year?
- Question 05If care is denied, what is the appeal process and the deadline to file?
05Every 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.
06Further reading
Keep Reading
- What 15,953 Facilities Report About Insurance AcceptanceOur analysis of how reported acceptance of private insurance, Medicaid and Medicare changes at higher levels of care.
- Levels of Care: How Treatment Settings CompareWhat detox, residential, partial hospitalization and outpatient care involve, and how they differ.
- America's Residential Treatment CapacityReported residential bed capacity and utilization, state by state, from the same federal survey.
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.
Not sure where to start?
Talk with someone about detox and rehab options.
100% confidential · No obligation · Available 24/7