Seizures denials in California external review

In the California DMHC record, independent physician reviewers decided 20 published external-review cases involving seizuresand overturned the plan’s denial in 60%. That is a historical result among cases that reached this program, not a forecast for an individual appeal.

California DMHC decisions
20
2003–2025
Overturned
60%
12 denials reversed

What the insurer actually argued

Denials fall into different categories, and they don’t succeed equally — so the reason on your letter changes how you should answer it.
Reason givenDecisionsOverturned
Medical Necessity
The plan said the care wasn’t medically necessary. The most common fight, and the most winnable.
15
46.7%
Experimental/Investigational
The plan called the treatment unproven. These turn on published evidence, so the appeal is a literature argument.
3
100%
Typical time to a decision
20 days
Most land between 7 and 21 days
Handled as urgent
35%
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

Nature of Statutory Criteria/Case Summary: An enrollee has requested reimbursement for emergency medical services provided. Findings: The physician reviewer found that the patient is a 53-year-old female who presented to the emergency department with a seizure that had resolved. The patient was visiting her son in the hospital when she began to feel diaphoretic and lightheaded. A nurse witnessed the patient have a convulsion and subsequently lose consciousness for 45 seconds. The patient denied head trauma, chest pain, or sensory or motor changes. Her past medical history included hypertension. Differential diagnoses included seizure, vasovagal, orthostasis, and anemia. Her vital signs were normal. The patient was fully oriented. No cranial nerve deficits were noted and muscle tone was normal.
Urgent Care · 2017 · IMR UR17-26149
Nature of Statutory Criteria/Case Summary: The parent of an enrollee has requested authorization and coverage for genetic testing (whole exome and mitochondrial DNA sequencing). Findings: The physician reviewer found that : the patient with seizures and history of hypoglycemia. The patient has also been diagnosed with hypotonia and developmental delays. She has had an extensive work-up, including metabolic testing, with no definitive answer. There is a likely pathogenic duplication of chromosome Xp11.3p11.23, which overlaps partially with a duplication Xp11.22p11.23 that causes intellectual disability, speech delay, electroencephalogram abnormalities and seizures. The patient’s parent has requested coverage genetic testing (whole exome and mitochondrial DNA sequencing).
Experimental/Investigational · 2017 · IMR EI17-25472

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 has requested authorization and coverage for immediate admission to an acute care hospital.On review of the available documentation, there is a lack of support for the requested immediate admission to an acute care hospital, for either the patient’s hernia or seizures. Typically for hernias, emergent surgery is indicated with incarcerated or strangulated hernias, but otherwise a planned surgery is recommended so the patient can be appropriately prepared for surgery to minimize risk. Although the patient may meet the criteria for surgical hernia repair, the patient should be referred to an in-person visit with the provider to be appropriately evaluated and triaged.
Medical Necessity · 2025 · IMR MN25-44988
A 24-year-old male enrollee has requested residential treatment center (RTC) services for treatment of his history of seizure caused by withdrawal from drugs. Findings: The physician reviewer found that on the date indicated, the patient reported that he was not experiencing any withdrawal symptoms. The records provided for review do not indicate that the patient’s reported seizure was due to abrupt discontinuation of benzodiazepines. The patient endorsed using Xanax 2 mg three to four times per week mixed with alcohol. His last reported use of alcohol was approximately two weeks prior to admission. By the date indicated, any alcohol would have been out of his system. Further, his last reported use of Xanax was on the date indicated, which was five days prior to his seizure.
Medical Necessity · 2014 · IMR MN14-18558

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 seizures, 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 seizures? Use the California record to prepare.

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