Radiofreq Ablat for CNS/ Neuromusc Dis: 52.2% of denials overturned
In 23 California IMR decisions from 2002 to 2025, reviewers overturned 12 (52.2%). In the last five years: 90.9% of 11. 1 were medical-necessity disputes, 22 experimental/investigational.
By year (last five)
| Year | Decisions | Overturned |
|---|---|---|
| 2021 | 5 | 100.0% |
| 2022 | 2 | 50.0% |
| 2024 | 2 | 100.0% |
| 2025 | 2 | 100.0% |
What the findings mention
| What the findings mention | Decisions | Overturned | All decisions here |
|---|---|---|---|
| Published evidence citedThe findings refer to peer-reviewed or published evidence. | 7 | 57.1% | 52.2% |
| Prior therapies failedThe findings mention treatments that were tried without adequate response. | 7 | 71.4% | 52.2% |
| Experimental or investigationalThe findings discuss whether the treatment is experimental. | 5 | 0.0% | 52.2% |
| Records did not supportThe findings say the documentation did not show what was needed (usually an upheld denial). | 4 | 0.0% | 52.2% |
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 Nature of Statutory Criteria/Case Summary: A patient has requested authorization and coverage for a radiofrequency ablation procedure. Refractory migraines can significantly impair daily life by causing disability and reducing productivity. Various treatment options are available, beginning with conservative approaches such as behavioral therapy, physical therapy, and pharmacotherapy. If these treatments prove ineffective, more invasive options, …”
“Nature of Statutory Criteria/Case Summary: A patient has requested authorization and coverage for bilateral radiofrequency ablation of the greater occipital nerves. While some published studies report success with radiofrequency ablation, definitive guidelines are lacking, and it remains unclear which patients benefit most from the therapy. Standard treatment approaches, including addressing medication adherence, managing psychological factors, and confirming potential contributing conditions …”
“The physician reviewer found that a patient has requested authorization and coverage for radiofrequency ablation for occipital neuralgia. The patient in this case has been diagnosed with occipital neuralgia. She has previously tried and failed medical management, trigger point injections, and Botox injections. She has had radiofrequency ablation in the past which improved her symptoms. Radiofrequency ablation is a safe, …”
And one the reviewer upheld
“Nature of Statutory Criteria/Case Summary: The patient has requested authorization and coverage for cervical nerve ablation with sedation. Medical literatures report, “The use of dual blocks may increase the radiofrequency ablation success rate. However, this will invariably result in false-negative blocks and deny some patients the benefit of radiofrequency ablation. There are also patient inconveniences and increased costs and risk …”
- 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 Radiofreq Ablat denials for CNS/ Neuromusc Dis overturned?
In 23 California IMR decisions from 2002 to 2025, reviewers overturned 12 (52.2%). In the last five years: 90.9% of 11. 1 were medical-necessity disputes, 22 experimental/investigational.
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.