A plain-language guide to understanding how health insurance covers addiction treatment — from verification to billing.
Important: Under the Mental Health Parity and Addiction Equity Act (MHPAEA), most insurance plans are required to cover addiction treatment at the same level as other medical conditions. If you have health insurance, you likely have coverage for rehab.
Most people receive health insurance through their employer, a spouse's employer, or through the ACA marketplace. The plan defines what services are covered, at what cost-sharing level, and which providers are in-network.
When you or a loved one is ready for treatment, the first step is contacting the facility's admissions team. Keystone Health Group will ask for your insurance member ID and date of birth to begin the verification process.
Our admissions team contacts your insurance company directly to confirm your active coverage, identify your deductible and out-of-pocket maximum, and determine which levels of care are covered under your specific plan.
Most insurance plans require prior authorization for inpatient and residential treatment. This means the facility must submit clinical documentation — including an assessment and treatment plan — before the insurer approves coverage. Keystone Health Group handles this process entirely on your behalf.
Once authorization is confirmed, you begin treatment. Your insurance company may conduct concurrent reviews during treatment to confirm ongoing medical necessity. Our clinical team prepares documentation for each review.
After insurance pays its portion, you are responsible for your deductible (if not yet met), any copay or coinsurance, and costs for any services not covered by your plan. Our team will provide a clear estimate of your expected costs before treatment begins.
Deductible
The amount you pay out of pocket before your insurance begins covering costs. For example, if your deductible is $2,000, you pay the first $2,000 of covered services each year.
Copay
A fixed amount you pay for a covered service, regardless of the total cost. For example, $50 per therapy session.
Coinsurance
Your share of costs after your deductible is met, expressed as a percentage. For example, 20% coinsurance means you pay 20% and insurance pays 80%.
Out-of-Pocket Maximum
The most you will pay in a plan year for covered services. Once you reach this limit, insurance covers 100% of covered costs for the rest of the year.
Prior Authorization
Approval from your insurance company before you receive certain services. Without prior authorization, the insurer may deny the claim.
In-Network vs. Out-of-Network
In-network providers have a contract with your insurer and typically cost less. Out-of-network providers may still be covered, but at a higher cost-sharing rate.
Medical Necessity
A clinical standard insurers use to determine whether a service is appropriate and necessary for your condition. Treatment must meet medical necessity criteria to be covered.
MHPAEA
The Mental Health Parity and Addiction Equity Act. Federal law requiring insurers to cover mental health and addiction treatment at the same level as other medical conditions.
Navigating insurance for addiction treatment can be confusing and time-consuming. Keystone Health Group's admissions team handles the process from start to finish:
Free, confidential, and completed same-day. No commitment required.
Verify Insurance NowOur admissions team is available 24/7 — no obligation, completely confidential.
