Autistic Disorders denials in California external review

In the California DMHC record, independent physician reviewers decided 17 published external-review cases involving autistic disordersand overturned the plan’s denial in 47.1%. That is a historical result among cases that reached this program, not a forecast for an individual appeal.

California DMHC decisions
17
2026
Overturned
47.1%
8 denials reversed
Typical time to a decision
8 days
Most land between 4 and 18 days
Handled as urgent
35.3%
Expedited when a delay would cause harm

What the reviewers wrote

Excerpts from the independent reviewers’ published findings — the actual reasoning, quoted, not summarised.

Where the denial was overturned

Findings: The physician reviewer found that Nature of Statutory Criteria/Case Summary: The patient’s parent has requested authorization and coverage for weekly applied behavior analysis (ABA) services to include (per 6-month period): therapeutic behavioral services 390 hours, mental health service plan development by non-physician 82 hours, and mental health service plan development by non-physician 30 hours. Based on the medical records, the Model Policy Coverage from the ABA Coding Coalition, and the ABA Treatment Guidelines from the Council of Autism Service Providers (CASP), the requested services are indicated for this patient.
Medical Necessity · 2026 · IMR MN26-46535
Findings: The physician reviewer found that Nature of Statutory Criteria/Case Summary: A patient’s parent has requested authorization and coverage for all or any of the applied behavior analysis therapy services: therapeutic behavioral services total of 390 hours; mental health service plan development by non-physician 83 additional hours; home care training, family; and skills training and development total 39 hours, with the approved 10 hours of assessments. Per the medical records, the patient has a diagnosis of autism spectrum disorder.
Medical Necessity · 2026 · IMR MN26-46881

Where the denial was upheld

Worth reading too — these show what an appeal has to overcome.
Findings: The physician reviewer found that Nature of Statutory Criteria/Case Summary: A patient’s parent has requested authorization and coverage for applied behavior analysis (ABA) services.Based on the information provided, the ABA Practice Guidelines from the Council of Autism Service Providers (CASP), the Model Policy Coverage from the ABA coding Coalition, and Papatola and Lustig's medical necessity criteria, the requested ABA services are not medically necessary for the treatment of this patient. The patient’s provider requested a comprehensive number of hours, but a limited number of goals were addressed in the treatment plan. Per the CASP guidelines, “Treatment intensity should reflect the complexity, breadth, and depth of treatment targets, as well as the environment, treatment protocols, and significance of patient needs.
Medical Necessity · 2026 · IMR MN26-46509
Findings: The physician reviewer found that Nature of Statutory Criteria/Case Summary: The parent of a patient has requested authorization and coverage for an increase of hours of applied behavior analysis (ABA) in-home therapy. Based on the provided medical records, the ABA Practice Guidelines from the Council of Autism Service Providers (CASP), the Model Policy Coverage from the ABA Coding Coalition, and the medical necessity criteria established by researchers, an increase in ABA therapy of additional hours of 1:1 therapy per week is not indicated for this patient. The requested increase of ABA therapy is not supported by any additional documentation. Therefore, the request does not meet several essential practice elements of ABA. Without data or goals, it is unclear how the additional hours per week will be utilized.
Medical Necessity · 2026 · IMR MN26-46892

Figures and quotations on this page come from 42,749 published decisions in the California DMHC Independent Medical Review dataset. These are California external-review outcomes. Other state and federal programs have different eligibility rules, processes, and current availability; the rates here do not transfer to those programs or predict an individual result. Excerpts are quoted verbatim from the public record and describe this condition generally, not any individual case.

How to use this in your appeal

These outcomes describe eligible cases completed through California DMHC’s Independent Medical Review program. They do not estimate the chance that an internal appeal, an external review in another jurisdiction, or your individual case will succeed. Use the record to identify evidence patterns involving autistic disorders, then check the rights and deadlines that apply to your plan.

SOURCE: CALIFORNIA DMHC INDEPENDENT MEDICAL REVIEW OUTCOMES (CHHS OPEN DATA) · AGGREGATES + DEIDENTIFIED DECISION EXCERPTS/REFERENCE IDS · METHODOLOGY

Not legal or medical advice. Coverage Rights is a self-help tool that helps you prepare your own appeal. For advice about your specific situation, talk to a licensed attorney or your doctor.

Fighting a denial for autistic disorders? Use the California record to prepare.

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