Does Medicaid Cover ABA Therapy in Illinois?
Published April 8, 2026
Yes — Illinois Medicaid covers ABA therapy for children and teens under 21 who have an autism spectrum disorder diagnosis. Coverage is administered through Illinois' managed care program, with several health plans operating across the state. Here's how to access it.
Key takeaways
- Illinois Medicaid covers ABA for all children under 21 with autism
- Coverage delivered through Medicaid Managed Care — Meridian, Blue Cross, Aetna Better Health, and others
- Chicago and suburban Cook County have the largest provider concentration
- Illinois also has a separate autism insurance mandate for commercial plans
- Adults may access behavioral support through the DD Medicaid waiver
Illinois Medicaid managed care plans covering ABA
Illinois Medicaid operates through a managed care organization (MCO) system called HealthChoice Illinois. The main plans that cover ABA therapy are:
- Meridian Health Plan — one of the largest Medicaid MCOs in Illinois
- Blue Cross Community Health Plans — covers most of Illinois
- Aetna Better Health of Illinois — strong network in the Chicago metro area
- Molina Healthcare of Illinois — statewide coverage
- CountyCare Health Plan — Cook County-specific plan
What Illinois Medicaid covers for ABA
Illinois Medicaid covers the following ABA services for eligible children:
- Behavior analysis assessment
- Development and modification of the behavior intervention plan
- Direct ABA treatment — individual and group
- Family training and caregiver coaching
- BCBA supervision of treatment
As with all states, coverage is based on medical necessity. Your child's BCBA will determine the recommended hours and submit a treatment authorization request. There is no fixed hour cap — what matters is what is clinically justified.
Illinois autism insurance mandate (commercial plans)
Illinois also has a strong autism insurance reform law (Public Act 95-0671) that requires fully-insured commercial health plans to cover ABA therapy. If your child has private insurance — not Medicaid — your plan is still required to cover ABA under Illinois law, with no annual dollar cap and no age limit.
How to access ABA through Illinois Medicaid
- Identify your Medicaid plan. Check your Medicaid card or call the Illinois Medicaid helpline at 1-800-226-0768.
- Obtain an autism diagnosis. A DSM-5 ASD diagnosis from a licensed psychologist, physician, or psychiatrist is required.
- Find an in-network ABA provider. Use your plan's provider directory or search FindABA filtering by Illinois and your city.
- Complete intake. The provider will assess your child and develop a treatment plan.
- Prior authorization is submitted and typically approved within 5–14 days.
- Therapy begins. No cost to you under Medicaid.
Adults with autism in Illinois
Illinois Medicaid does not cover ABA for adults over 21 as a standard benefit. Adults with developmental disabilities — including autism — may access behavioral and support services through the Illinois Division of Developmental Disabilities (DDD) and the Home-Based Support Services (HBS) waiver. Contact DDD through the Illinois Department of Human Services at dhs.illinois.gov.
Illinois resources
- Illinois Department of Healthcare and Family Services: hfs.illinois.gov
- Illinois DHS Division of Developmental Disabilities: dhs.illinois.gov/dd
- Autism Society of Illinois: autismillinois.org
- Illinois Medicaid helpline: 1-800-226-0768
Find Illinois ABA providers that accept Medicaid
FindABA lists ABA providers across Illinois showing which Medicaid plans they accept, including Meridian, Aetna Better Health, and Blue Cross Community.
Search Illinois providers →