Arthroscopy for Orth/Musculoskeletal: 43.8% of denials overturned
In 96 California IMR decisions from 2002 to 2026, reviewers overturned 42 (43.8%). In the last five years: 24.5% of 49. 73 were medical-necessity disputes, 23 experimental/investigational.
By year (last five)
| Year | Decisions | Overturned |
|---|---|---|
| 2021 | 12 | 41.7% |
| 2022 | 4 | 0.0% |
| 2023 | 11 | 9.1% |
| 2024 | 11 | 27.3% |
| 2025 | 10 | 30.0% |
| 2026 | 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. | 51 | 39.2% | 43.8% |
| Prior therapies failedThe findings mention treatments that were tried without adequate response. | 19 | 68.4% | 43.8% |
| Records did not supportThe findings say the documentation did not show what was needed (usually an upheld denial). | 17 | 0.0% | 43.8% |
| Guidelines or criteria citedThe findings cite guidelines, criteria or a standard of care. | 7 | 42.9% | 43.8% |
| Experimental or investigationalThe findings discuss whether the treatment is experimental. | 4 | 50.0% | 43.8% |
| Urgent or emergencyThe findings mention urgency. | 3 | 33.3% | 43.8% |
| Step therapy or fail-firstThe findings mention a fail-first requirement. | 3 | 33.3% | 43.8% |
| Alternatives contraindicatedThe findings mention a contraindication to the plan's preferred option. | 3 | 66.7% | 43.8% |
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
“The physician reviewer found that Nature of Statutory Criteria/Case Summary: A patient has requested reimbursement for major arthroscopic synovectomy. Arthroscopic synovectomy is an effective treatment for recurrent synovitis of the knee and improves patients’ functional status and quality of life. In this case, the patient has a history of recurrent synovitis with persistent left knee effusion. The literature supports the …”
“The physician reviewer found that Nature of Statutory Criteria/Case Summary: A patient has requested reimbursement for hip arthroscopy with the removal of a loose body. In this case, the patient was being treated for chronic and debilitating left hip pain. The record establishes that after exhausting conservative treatment modalities, the patient underwent a left hip arthroscopy, labral tear repair, pincer …”
“The physician reviewer found that a patient has requested reimbursement for left knee arthroscopic meniscus repair surgery. Surgical decision-making depends on the type, size and location of the meniscus injury. Recent medical advancements have expanded the indications for meniscus surgery. Knee arthroscopy may be offered as a treatment for meniscal knee pain symptoms. Arthroscopy is indicated for patients with meniscal …”
And one the reviewer upheld
“The physician reviewer found that Nature of Statutory Criteria/Case Summary: A patient has requested authorization and coverage for a right knee arthroscopy. Surgical decision-making for meniscal pathology depends on the type, size, and location of the injury. Current literature notes that mechanical symptoms, including catching and locking, may have multifactorial causes and may not consistently respond to arthroscopic meniscectomy.In this …”
- 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 Arthroscopy denials for Orth/Musculoskeletal overturned?
In 96 California IMR decisions from 2002 to 2026, reviewers overturned 42 (43.8%). In the last five years: 24.5% of 49. 73 were medical-necessity disputes, 23 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.