Insurance Mandates & Appeals

State Insurance Mandates

As of 2026, all 50 states and the District of Columbia have enacted some form of autism insurance mandate. These laws require private health insurers to cover the diagnosis and treatment of autism spectrum disorder, including applied behavior analysis (ABA) therapy, which is the most evidence-based treatment for autism. However, the scope of these mandates varies dramatically from state to state.

Key variations include age limits (some states cap coverage at age 18 or 21, while others have no age cap), dollar caps (some states limit annual or lifetime spending, while others prohibit caps), and covered conditions (some states cover only autism, while others cover a broader range of developmental disabilities).

State mandates apply to fully insured health plans, which are plans purchased by individuals or provided by employers who buy coverage from an insurance company. These plans are regulated by your state's department of insurance. Approximately 40% of insured workers are on fully insured plans.

ERISA and Self-Funded Plans

Here is the critical distinction that catches many families off guard: if your employer self-funds its health plan (meaning the employer pays claims directly rather than purchasing insurance), the plan is governed by the federal Employee Retirement Income Security Act (ERISA), not state law. ERISA preempts state insurance mandates, which means your state's autism mandate may not apply.

Approximately 60% of workers with employer-sponsored coverage are on self-funded ERISA plans. You can determine if your plan is self-funded by looking at your Summary Plan Description (SPD) or calling your HR department. If your plan is administered by a third-party administrator (TPA) rather than an insurance company, it is likely self-funded.

However, ERISA plans are not entirely immune from coverage requirements. The Mental Health Parity and Addiction Equity Act (MHPAEA) requires ERISA plans that cover mental health benefits to cover them at the same level as medical/surgical benefits. Since autism is classified as a mental health condition in most plan documents, this means if the plan covers any mental health treatments, it cannot impose stricter limits on autism treatment than it does on medical/surgical treatment.

Additionally, the Affordable Care Act (ACA) requires all plans sold on the individual and small group markets to cover mental health and behavioral health services as essential health benefits, which includes ABA therapy in most interpretations.

ABA Therapy Coverage

Applied behavior analysis (ABA) is the treatment most commonly at issue in insurance disputes. ABA is the most extensively studied treatment for autism, with over five decades of research supporting its effectiveness. Despite this evidence base, insurers frequently deny or limit ABA coverage through various tactics:

• Medical necessity denials:The insurer claims ABA is not "medically necessary" for the individual, often based on a paper review by a reviewer who has never met the patient.
• Hour reductions: The insurer approves ABA but at significantly fewer hours than the treating provider recommended, often reducing from 30+ hours per week to 10-15 hours.
• Age-based denials: Some insurers claim ABA is only effective for young children and deny coverage for older children, adolescents, or adults. Research does not support age-based cutoffs.
• "Habilitative vs. rehabilitative" distinction: Some plans try to classify ABA as habilitative (building new skills) rather than rehabilitative (restoring lost function) and claim they do not cover habilitative services. Many state mandates and the ACA have eliminated this distinction.
• Provider credential requirements: Insurers may require that ABA be provided only by a Board Certified Behavior Analyst (BCBA) rather than allowing supervised Registered Behavior Technicians (RBTs), effectively making coverage unavailable due to provider shortages.

How to Appeal a Denial

Insurance denials are not final. In fact, studies show that a significant percentage of denials are overturned on appeal. Here is the process:

1. Get the denial in writing: Request the complete denial letter, including the specific reason for denial, the plan provision being cited, and the clinical criteria used. You have a legal right to this information.
2. Internal appeal (Level 1): File a written appeal with the insurer within the deadline stated in the denial letter (usually 30-180 days). Include a letter from the treating provider explaining why the service is medically necessary, supporting medical records, and any relevant research.
3. Internal appeal (Level 2): If the first appeal is denied, most plans allow a second level of internal appeal. At this stage, consider having the provider write a more detailed letter addressing each specific reason cited in the denial.
4. External review: After exhausting internal appeals, you have the right to an external review by an independent third party. For fully insured plans, contact your state department of insurance. For ERISA plans, the plan must arrange the external review.
5. State insurance department complaint: File a complaint with your state department of insurance if you believe the insurer is violating the state mandate. Regulators can order insurers to comply.
6. Legal action: If all else fails, consult a disability rights attorney or health law attorney. Many attorneys handle these cases on contingency. Organizations like the Autism Insurance Resource Center and state protection and advocacy organizations can provide referrals.

Tips for Stronger Appeals

• Always appeal. The insurer is counting on you to give up. Every denial letter should be treated as the first step in an appeal, not a final answer.
• Request a peer-to-peer review. Your treating provider has the right to speak directly with the insurer's medical reviewer before a denial is finalized.
• Cite specific plan language. If your plan document says it covers "behavioral health services" or "mental health treatment," use that exact language in your appeal.
• Document everything. Keep a log of every call, including the date, time, representative name, reference number, and what was said.
• Involve your state legislator. A letter from an elected official can sometimes move an appeal forward, especially with state-regulated plans.