OON Referral for Orth/Musculoskeletal: 13.8% of denials overturned
In 29 California IMR decisions from 2002 to 2025, reviewers overturned 4 (13.8%). In the last five years: 25.0% of 4. 28 were medical-necessity disputes, 1 experimental/investigational.
By year (last five)
| Year | Decisions | Overturned |
|---|---|---|
| 2021 | 2 | 50.0% |
| 2023 | 1 | 0.0% |
| 2025 | 1 | 0.0% |
What the findings mention
| What the findings mention | Decisions | Overturned | All decisions here |
|---|---|---|---|
| Published evidence citedThe findings refer to peer-reviewed or published evidence. | 9 | 33.3% | 13.8% |
| Records did not supportThe findings say the documentation did not show what was needed (usually an upheld denial). | 9 | 0.0% | 13.8% |
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
“Nature of Statutory Criteria/Case Summary: The patient’s parent has requested authorization and coverage for bladder augmentation surgery. Szymanski and colleagues note that bladder augmentation is a long-lasting treatment for patients with spina bifida. The authors further note that while benefiting continence and renal outcomes, this operation frequently requires additional surgeries, necessitating close follow-up. In this case, the patient has spina …”
“Nature of Statutory Criteria/Case Summary: The patient has requested authorization and coverage for myofascial release treatment. A randomized controlled clinical trial published by Ceca and colleagues evaluated the benefits of myofascial release techniques on patients with fibromyalgia. The authors found statistically significant improvements in pain intensity, fatigue, stiffness, depression, and range of motion. Researchers assessed the effectiveness of different styles …”
“Nature of Statutory Criteria/Case Summary: An enrollee has requested a fitted shoe (orthotic boot) for treatment of his osteoarthritis of the left ankle. The physician reviewer found that a review of the literature reveals that for well selected patients, normal footwear is all that is needed following ankle fusion. However, articles also discuss several different types of shoe modifications, in-shoe …”
And one the reviewer upheld
“The physician reviewer found that Nature of Statutory Criteria/Case Summary: A patient has requested authorization and coverage for tertiary level of care services with an orthopedic/hand surgeon. Treatment of the patient’s condition may involve surgical and non-surgical management, which is routinely performed by qualified hand surgeons. In this case, the conditions described can be appropriately managed by a qualified specialist …”
- 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 OON Referral denials for Orth/Musculoskeletal overturned?
In 29 California IMR decisions from 2002 to 2025, reviewers overturned 4 (13.8%). In the last five years: 25.0% of 4. 28 were medical-necessity disputes, 1 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.