Does Insurance Cover ABA Therapy in Illinois?
Learn how Illinois ABA coverage works, what to ask your insurer, and what to do if denied.
How Illinois Coverage Rules Work
In Illinois, your ABA coverage depends on the type of insurance plan you have. The state's autism mandate requires fully insured plans to cover medically necessary ABA therapy. Fully insured means you buy the plan directly from an insurance company, either on your own or through your employer.
But if your employer self-funds its health plan, the state mandate does not apply. Self-funded plans are governed by federal ERISA rules, and they are not required to follow Illinois insurance mandates. Many self-funded plans still cover ABA, but the decision is up to the employer, not the state.
This is why two families working at the same company can get different answers. One may have a fully insured plan with strong ABA coverage, while the other has a self-funded plan with different limits or no coverage at all. Your HR department can tell you which type you have.
Ask These Questions First
Before you call an ABA agency, get the facts from your insurer. Call the member services number on your insurance card and ask these exact questions.
Ask: Is my plan fully insured or self-funded? Then ask: Does my plan cover ABA therapy for autism? What are the specific coverage limits, such as number of hours per week, annual visit cap, or age limit? Do I need a prior authorization, and what is the process? What are my out-of-pocket costs, including deductible, copay, and coinsurance?
- Is my plan fully insured or self-funded?
- Does my plan cover ABA therapy for autism?
- What are the specific coverage limits (hours, visits, age)?
- Do I need a prior authorization?
- What are my out-of-pocket costs?
What Prior Authorization Requires
Most plans require prior authorization before ABA therapy starts. This means your provider must submit a treatment plan to your insurer for approval. The plan typically includes a diagnosis of autism, a prescription or referral from a doctor, and a detailed assessment of your child's needs.
Your ABA provider will handle most of this paperwork, but you need to make sure the authorization is approved before services begin. If you start therapy without approval, you may be responsible for the full cost. Ask your insurer how long the review takes, usually 10 to 30 days, and follow up if you haven't heard back.
Keep a log of all calls, names, dates, and reference numbers. This helps if you need to appeal a denial.
What to Do If Denied
If your insurer denies coverage, you have the right to appeal. Start by asking for the denial in writing and the specific reason. Common reasons include not meeting medical necessity criteria or missing paperwork.
You can file an internal appeal with your insurer, usually within 180 days of the denial. If that fails, you may request an external review by an independent third party. In Illinois, you can also contact the Illinois Department of Insurance for help.
Your ABA provider can write a letter of medical necessity and submit additional documentation. Many denials are overturned on appeal, so don't give up.
Medicaid as an Option
If you qualify for Medicaid, your child can get ABA therapy through the Early and Periodic Screening, Diagnostic and Treatment (EPSDT) benefit. EPSDT requires states to cover medically necessary services for children under 21, including ABA.
Your child must have a diagnosis of autism and a doctor's prescription. Your Medicaid plan will assign a care coordinator, and the plan name is on your member card. Contact them directly to find in-network ABA providers.
Medicaid may cover ABA with no cost to you, but you still need prior authorization. The process is similar to private insurance, so ask your Medicaid plan for specific requirements.
Finding Providers in Illinois
Illinois has ABA agencies across many counties. The largest concentrations are in Cook County, DuPage County, and Will County. That gives you plenty of options in the Chicago area, but rural counties may have fewer choices.
When you call an agency, ask if they accept your insurance and if they have experience with your specific plan. Also ask about waitlists, which can range from a few weeks to several months depending on the area.
Confirm that the agency is licensed and that their therapists are Board Certified Behavior Analysts (BCBAs) or supervised by one. This ensures your child gets quality care.
Illinois listings right now
478 ABA agencies across 33 Illinois counties.