Insurance Denied ABA in Maryland? How to Appeal

In short: If your insurance denies ABA therapy in Maryland, you have the right to appeal. Start by requesting a detailed denial letter, then gather supporting documents like a letter of medical necessity from your BCBA. Follow your plan's internal appeal process within the deadline, and if denied again, request an external review. A free matching service like ABA Centers Near Me can connect you with vetted providers who accept your insurance.
Key takeaways
- Maryland law requires many private insurance plans to cover ABA therapy for autism, so a denial may be overturned on appeal.
- Always request a written denial letter with specific reasons and check your plan's appeal deadline, often 180 days.
- A strong appeal packet includes a letter of medical necessity from a BCBA, diagnostic records, and treatment progress notes.
- If the internal appeal fails, you can request an external independent review at no cost to you.
Understanding the Denial
Receiving a denial letter for Applied Behavior Analysis (ABA) therapy can feel like a major setback. You may wonder why insurance would deny a treatment that is widely recognized as evidence-based for children with autism. In Maryland, denials often stem from a few common reasons: the insurer claims the therapy is not medically necessary, the diagnosis code does not match the policy, or the provider is out of network. Sometimes the denial is simply a paperwork error. Before you panic, know that denials are not final. Every insurance plan regulated in Maryland must offer an appeals process, and many denials are overturned when families submit the right documentation.
It is important to understand that ABA therapy is a prescribed medical treatment for autism spectrum disorder (ASD). Maryland has strong consumer protections, including a state autism insurance mandate that requires many group health plans to cover ABA. However, the specifics of your plan matter. Self-funded employer plans (ERISA) may have different rules. The first step is always to read the denial letter carefully. Look for the exact reason, the policy provision cited, and the deadline to appeal. Mark that date on your calendar and start gathering evidence immediately.

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Your Rights Under Maryland Law
Maryland's Autism Insurance Mandate
Maryland passed Senate Bill 792 in 2012, which requires most private health insurance plans to provide coverage for the diagnosis and treatment of autism spectrum disorder, including ABA therapy. This law applies to plans issued or renewed in Maryland, including individual, small group, and large group plans. Coverage must include up to $36,000 per year for ABA therapy for children through age 19, with no annual or lifetime dollar limits on other covered benefits. If your denial seems to ignore this mandate, you have a strong basis for appeal.
Federal Protections
In addition to state law, federal laws like the Mental Health Parity and Addiction Equity Act (MHPAEA) require that mental health and substance use disorder benefits, including ABA therapy, be no more restrictive than medical and surgical benefits. If your plan limits ABA visits or imposes higher copays compared to other medical treatments, that may be a parity violation. The Affordable Care Act (ACA) also requires many plans to cover essential health benefits, including behavioral health treatment. If your plan is ACA-compliant, ABA should be covered for children with autism.
Medicaid (Medical Assistance) Coverage
Maryland Medicaid, known as Medical Assistance, covers ABA therapy for children under the Early and Periodic Screening, Diagnostic and Treatment (EPSDT) benefit. There is no age cap, and services must be provided when medically necessary. If you receive a denial from Maryland Medicaid, you have the right to a fair hearing. The appeals process for Medicaid is different from private insurance, but the same principle applies: you can challenge the decision.
Step-by-Step Appeal Process
Step 1: Read the Denial Letter and Know Your Deadline
Every denial letter must include the specific reason for denial and instructions on how to appeal. The deadline to file an internal appeal is typically 180 days from the date of the denial, but check your plan documents. Missing the deadline can forfeit your right to appeal, so act quickly.
Step 2: Gather Supporting Documents
Your appeal packet should include a letter of medical necessity from your BCBA or supervising clinician. This letter should explain your child's diagnosis, why ABA is medically necessary, the specific goals of therapy, and the risks of not receiving treatment. Also include diagnostic reports (e.g., ADOS-2 results), any previous treatment records, progress notes, and a copy of the denial letter. If your plan has a prior authorization requirement, include that as well.
Step 3: File the Internal Appeal
Submit your appeal in writing, either by mail or through the insurer's online portal. Keep copies of everything. Most insurers must respond within 30 days for a standard appeal (or 15 days for urgent cases). If the internal appeal is denied, the letter will explain how to request an external review.
Step 4: Request an External Review
Maryland law gives you the right to an independent external review if your internal appeal is denied. The external reviewer is not employed by your insurance company. You must request it within 120 days of the internal denial. There is no cost to you. The reviewer will examine your case and the insurer's decision. If they overturn the denial, the insurer must cover the therapy.

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Building a Strong Appeal Packet
The quality of your documentation can make or break your appeal. Here are key elements to include:
- Letter of Medical Necessity: Written by the BCBA, this is the most critical piece. It should clearly state the diagnosis, the severity of symptoms, the recommended hours of therapy, and why less intensive treatments are not sufficient. Include citations from peer-reviewed studies if possible.
- Diagnostic Evaluation: A comprehensive autism assessment from a qualified professional (developmental pediatrician, child psychologist, etc.) that confirms the ASD diagnosis using standardized tools.
- Treatment Plan and Progress Data: Show that ABA is not just a generic service but is tailored to your child's needs. Include graphs or charts demonstrating progress toward goals.
- Physician's Letter of Support: A letter from your child's primary care doctor or developmental pediatrician can add weight, especially if they recommend ABA.
- Copy of the Denial Letter and Relevant Policy Language: Highlight the specific policy provision the insurer used to deny coverage, and then explain why it should not apply.
- Any Previous Appeals or Correspondence: Keep a timeline of all communications.
Common Mistakes to Avoid
- Missing the appeal deadline. This is the most common reason families lose their right to challenge a denial. Set a reminder immediately.
- Not requesting a detailed denial letter. If the denial is vague, call the insurer and ask for a written explanation with the specific policy language.
- Appealing without a letter of medical necessity from a BCBA. A generic letter from a pediatrician may not be enough. The BCBA knows the treatment plan best.
- Giving up after the first denial. Many families succeed on the second or third level of appeal. Persistence pays off.
- Not using free resources. There are organizations in Maryland that can help you navigate the appeals process, and a free matching service like ABA Centers Near Me can connect you with providers who have experience with insurance appeals.

Getting Help: Free Matching Service and Other Resources
You do not have to go through this process alone. ABA Centers Near Me is a free service that matches Maryland families with vetted, BCBA-led ABA providers. While we do not handle appeals directly, we can connect you with providers who are familiar with the insurance landscape in Maryland and can help you build a strong case. In addition, consider reaching out to:
- Maryland Insurance Administration (MIA): The state agency that regulates insurance. They can help if your insurer is not following the law. Call 1-800-492-6116.
- Maryland Department of Health - Office of Health Care Quality: For issues related to Medicaid.
- Autism Society of Maryland: Offers support and advocacy for families navigating insurance denials.
- Patient Advocate Foundation: A national nonprofit that provides case management services for insurance issues.
What If the Appeal Is Denied?
If your internal appeal and external review both fail, you still have options. For private insurance, you may be able to file a complaint with the Maryland Insurance Administration. For self-funded employer plans, you might need to pursue a claim under ERISA federal law, which can involve filing a lawsuit. For Medicaid, you can request a fair hearing with the Maryland Office of Administrative Hearings. These steps are more complex, but they are possible. Many families also explore switching to a different insurance plan during open enrollment that offers better ABA coverage. Meanwhile, you can use a free matching service to find providers who offer private pay or sliding scale fees, though this is less common.
Moving Forward with ABA Therapy in Maryland
An insurance denial is not the end of the road. Maryland has strong protections for families seeking ABA therapy, and the appeals process exists to correct mistakes. By understanding your rights, building a thorough appeal packet, and meeting all deadlines, you can often overturn the denial. Remember that you are your child's best advocate. If you need help finding a provider who accepts your insurance once the appeal is approved, ABA Centers Near Me is here to match you with vetted, BCBA-led providers in your area, free of charge. You can also use our service to explore providers before you appeal, so you know what options exist. Take a deep breath, read that denial letter one more time, and start your appeal today.