Federal law requires most private and government insurance to cover addiction treatment. Exactly what's covered, what you'll pay, and how prior authorization works varies by payer — pick yours below for a plain-English breakdown.
🆘 Free Help: 1-800-662-4357Most insurance in the United States — private and government — is legally required to cover addiction treatment. The Mental Health Parity and Addiction Equity Act (MHPAEA) requires plans that offer mental health or substance use disorder benefits to cover them on par with medical and surgical care, and the Affordable Care Act (ACA) classifies substance use disorder treatment as one of ten essential health benefits every ACA-compliant plan must include.
That's the good news. The details — deductibles, in-network facility lists, prior authorization requirements, and how many days of residential treatment get approved — differ significantly from payer to payer, and even from plan to plan within the same payer. A BCBS PPO in one state handles preauthorization very differently than a Kaiser HMO or a Humana Medicare Advantage plan.
Below is a dedicated coverage guide for each major payer, written in plain English, covering what's typically covered, what to expect for copays and prior authorization, and how to actually use your benefits to get into treatment.
Bottom line: if you have insurance — private or government — you very likely have some coverage for rehab. The guides below tell you exactly what to expect from your specific payer.
Select your insurance provider for a detailed breakdown of what's covered, typical costs, and how to get treatment approved.
33+ regional licensee plans, including Anthem — how coverage, networks, and prior authorization differ by state.
Read the guide →PPO and HMO plans — what levels of care are covered and how Aetna's prior authorization process works.
Read the guide →Behavioral health coverage details, in-network vs. out-of-network costs, and how to verify benefits before admission.
Read the guide →The nation's largest insurer — what's covered under UnitedHealthcare/Optum behavioral health plans.
Read the guide →Mostly Medicare Advantage — what's covered and how prior authorization works for Humana members.
Read the guide →Closed-network HMO — how coverage and outside referrals work if you're a Kaiser Permanente member.
Read the guide →Covers addiction treatment in all 50 states — income limits, what's covered, and how to find a Medicaid rehab.
Read the guide →Parts A, B, and D coverage for detox, inpatient, and outpatient addiction treatment for enrollees 65+ or on disability.
Read the guide →General questions that apply across every payer. For payer-specific details, see the guide for your plan above.
Yes, in almost every case. The Mental Health Parity and Addiction Equity Act (MHPAEA) requires most group health plans that offer mental health or substance use disorder benefits to cover them on par with medical/surgical benefits. The ACA goes further, classifying substance use disorder treatment as one of ten essential health benefits that all ACA-compliant individual and small-group plans must cover.
This applies to private insurance (BCBS, Aetna, Cigna, UnitedHealthcare, Humana, Kaiser) as well as Medicaid and Medicare. What's not guaranteed is which specific facilities, levels of care, or treatment lengths are covered without prior authorization — that varies by plan, which is why we built a dedicated guide for each payer above.
No. While federal law sets a floor requiring coverage of addiction treatment, the specifics — deductibles, copays, in-network facility lists, prior authorization rules, and day/visit limits — differ significantly by payer and even by individual plan within the same payer.
A BCBS PPO plan in one state may cover 90 days of residential treatment with minimal prior authorization, while a different plan requires re-authorization every few days. That's why we built a dedicated coverage guide for each major payer rather than a single generic page.
You have the right to appeal. Insurers must provide a written reason for denial, and MHPAEA gives you additional grounds to challenge denials that treat addiction treatment more restrictively than comparable medical care. Most appeals go through an internal review first, then an independent external review if still denied.
For a full walkthrough of the appeals process, timelines, and sample appeal language, see our complete guide: Insurance Denials & Appeals.
No. Facilities that accept self-pay, sliding-scale fees, or state/SAMHSA block grant funding exist in every state, and many accept patients without any insurance at all. Our directory lets you filter facilities by payment type, including free and low-cost options.
Call SAMHSA's National Helpline at 1-800-662-4357 (24/7, confidential) for guidance regardless of your insurance status.
Have a question not answered here? See our Drug Rehab FAQ for more common questions about treatment, insurance, and what to expect.