Autism / ABA Therapy Insurance Denied in Maryland? Here's How to Fight Back

Maryland has a comprehensive autism insurance mandate and a well-developed system of Medicaid and developmental disability supports. Yet families across the state continue to face ABA therapy denials from commercial insurers. Here is how to fight back using Maryland's legal protections and appeal mechanisms.

Maryland's Autism Insurance Mandate

Maryland Insurance Article §15-848 requires health insurers and HMOs to cover ABA therapy and other autism treatments for individuals with ASD. The mandate applies to individuals through age 21. Coverage is required without annual dollar caps that are more restrictive than those applied to analogous physical health benefits.

The Maryland Insurance Administration (MIA) regulates fully insured plans. Self-funded ERISA plans are exempt from state law but subject to federal Mental Health Parity Act (MHPAEA) Explained" class="auto-link">MHPAEA.

Common ABA Denial Tactics in Maryland

"Not medically necessary": Maryland insurers use internal clinical criteria stricter than BACB or AAP guidelines. Intensive early intervention programs are frequently reduced without direct evaluation.

Hour reductions at utilization review: Insurers progressively reduce authorized hours at each review cycle, citing progress or plateau — even when the BCBA documents continued clinical need.

Supervisor ratio challenges: Plans deny BCBA supervision hours exceeding internal thresholds without clinical justification, even when BACB ethics require that level of oversight.

"Educational not medical": Insurers argue ABA overlaps with school-based IEP services and should be funded by the school system. Maryland law and MHPAEA do not support this exclusion for medically prescribed ABA.

Network inadequacy: In western Maryland and rural areas, in-network BCBAs are scarce. Insurers deny out-of-network claims even when no in-network provider is reasonably accessible.

How to Appeal an ABA Denial in Maryland

Step 1 — Request the denial with clinical criteria. Maryland requires insurers to provide the specific criteria used in medical necessity determinations. Get this in writing immediately.

Step 2 — Compile clinical documentation. Gather the ASD diagnostic evaluation (ADOS-2, ADI-R), the BCBA's current treatment plan with measurable goals, session data graphs, a Vineland Adaptive Behavior Scales assessment, and a physician letter of medical necessity.

Step 3 — File an internal appeal. Submit your appeal citing Maryland Insurance Article §15-848, MHPAEA parity, AAP guidelines, and peer-reviewed ABA research. Request a peer-to-peer call between your BCBA and the insurer's medical director. Insurers must respond within 30 days (standard) or 72 hours (urgent).

Step 4 — Request an IROs) Explained" class="auto-link">Independent Review Organization (IRO) review through MIA. Maryland provides an independent External Independent Review: Complete Guide" class="auto-link">external review after internal appeals are exhausted. File at insurance.maryland.gov or call MIA at 1-800-492-6116. IRO decisions are binding on the insurer.

Step 5 — File an MIA complaint. File a formal complaint with MIA to create a regulatory record and trigger a compliance investigation.

Maryland Medicaid ABA: DDA CFC Waiver and HealthChoice

Maryland Medicaid (HealthChoice) covers ABA therapy for children under 21 as a medically necessary service through the EPSDT benefit. Coverage is administered through HealthChoice MCOs. Contact your MCO for ABA authorization and reference the EPSDT mandate.

The Maryland Developmental Disabilities Administration (DDA) within the Department of Health administers HCBS waiver programs for individuals with developmental disabilities, including autism. Key programs include:

• Community Pathways Waiver (CPW): Comprehensive supports for individuals with developmental disabilities
• Community Supported Living Arrangement (CSLA) Waiver: For individuals living in their own home or with family
• Community Personal Assistance Services and Supports (CPAS) Waiver: Supports including personal care and habilitation
• Children and Families (CFC) Waiver: Designed for children with significant disabilities, the CFC waiver provides a range of supports including behavioral supports, respite, and family training

Apply for DDA waivers through the DDA at dda.health.maryland.gov. Waitlists for waiver slots can be significant. Apply early and maintain contact with your regional DDA office.

Advocacy Resources

• The Autism Society of the Chesapeake Bay and other MD chapters: autism-society.org
• Disability Rights Maryland (Protection & Advocacy): disabilityrightsmd.org — legal assistance for insurance and educational disputes
• The Maryland Developmental Disabilities Council: md-council.org

Fight Back With ClaimBack

Maryland's autism mandate and federal parity law give families meaningful tools to challenge ABA denials. Start your appeal with ClaimBack and get a professionally drafted appeal letter citing Maryland Insurance Article §15-848, MHPAEA parity, and the clinical evidence your insurer must address.

Related Reading

• How to Write an Insurance Appeal Letter
• What Is Medical Necessity?
• Common Reasons Insurance Claims Are Denied