Migraine Rx for Nervous System: 100.0% of denials overturned
In 9 California IMR decisions from 2026 to 2026, reviewers overturned 9 (100.0%). In the last five years: 100.0% of 9. 9 were medical-necessity disputes.
By year (last five)
| Year | Decisions | Overturned |
|---|---|---|
| 2026 | 9 | 100.0% |
What the findings mention
| What the findings mention | Decisions | Overturned | All decisions here |
|---|---|---|---|
| Prior therapies failedThe findings mention treatments that were tried without adequate response. | 6 | 100.0% | 100.0% |
| Alternatives contraindicatedThe findings mention a contraindication to the plan's preferred option. | 3 | 100.0% | 100.0% |
| Published evidence citedThe findings refer to peer-reviewed or published evidence. | 3 | 100.0% | 100.0% |
| Step therapy or fail-firstThe findings mention a fail-first requirement. | 3 | 100.0% | 100.0% |
Keyword matches on the reviewer’s findings, not causes. A tag that appears mostly in overturned decisions is worth documenting in an appeal; it is not a guarantee.
From recent overturned decisions
“The physician reviewer found that a patient has requested authorization and coverage for Qulipta. The U.S. Food and Drug Administration (FDA) approves Qulipta as a prophylactic chronic migraine treatment based on its known efficacy and safety. Per the medical records, the patient has a diagnosis of migraines and has tried and failed multiple prior therapies but responded well to Qulipta. …”
“The physician reviewer found that a patient has requested authorization and coverage for Ajovy, when used in combination with the approved Nurtec. In this case, the patient has been diagnosed with chronic migraines and has attempted multiple prior therapies with limited relief. As such, the requested Ajovy, when used in combination with the approved Nurtec, is medically necessary for the …”
“The physician reviewer found that a patient has requested authorization and coverage for Nurtec. Nurtec is a U.S. Food and Drug Administration (FDA)-approved medication with known efficacy, safety, and general acceptance as an effective prophylactic and abortive migraine treatment. The American Headache Society recommends calcitonin gene-related peptide blocking medications, such as Nurtec, as first-line therapy for migraines. In this case, …”
- California only: these are decisions by independent reviewers under California's IMR program (plans regulated by the Department of Managed Health Care). Other states and self-funded employer plans use different reviewers and rules.
- Selection: only denials that a member took all the way to IMR appear. Most denials are never appealed, and the ones that reach an external reviewer are not a random sample.
- Overturned means the reviewer disagreed with the plan; it does not mean the treatment worked or that a similar request will be approved.
- Argument tags are keyword matches on the reviewer's findings. They describe what the findings mention, not why the case was decided.
- Categories are DMHC's own labels (treatment sub-category and diagnosis category); 'Other' is a catch-all and is excluded from rankings.
Source: California Department of Managed Health Care, Independent Medical Review (IMR) Determinations, Trend (CHHS Open Data). Public California government data; Apellica's aggregates and tags are CC BY 4.0.
Questions
How often were Migraine Rx denials for Nervous System overturned?
In 9 California IMR decisions from 2026 to 2026, reviewers overturned 9 (100.0%). In the last five years: 100.0% of 9. 9 were medical-necessity disputes.
What should an appeal document, based on these findings?
Whatever the plan's criteria ask for, shown in the record: the treatments already tried and their results, contraindications to the plan's preferred option, the guideline or evidence that supports the request, and the treating clinician's reasoning written to the criteria. The tag table shows which of these the reviewers mentioned most in overturned cases.
Does a California IMR result apply to my plan?
Only California plans regulated by the Department of Managed Health Care go to IMR. Other states and self-funded employer plans use different reviewers, but they weigh the same things.
Independent reviewers reverse plans when the record answers the criteria. Upload the denial letter; a senior reviewer reads it within 24 hours and tells you in writing whether it can be appealed and how. $0 upfront, 10% of what is recovered, nothing if we do not recover. Not a law firm.