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Arthroscopy denials: what the review data shows
Independent reviewers have decided 97 published cases where an insurer denied Arthroscopy — and they overturned the insurer 43.3% of the time. A denial for Arthroscopy is a starting position, not a final answer.
Published decisions
97
2001–2026
Overturned
43.3%
42 denials reversed
Conditions behind arthroscopy denials
What insurers denied — and how those fights ended.
| Category | Decisions | Overturned |
|---|---|---|
| Knee Problem Pain | 26 | 50% |
| Shoulder Problem Pain | 14 | 28.6% |
| Osteoarthritis | 9 | 33.3% |
| Hip Problem | 9 | 55.6% |
| Knee Problem | 8 | 37.5% |
| Hip Problem Pain | 7 | 71.4% |
| Ligament Problem | 3 | 33.3% |
| Back Pain | 3 | 33.3% |
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 given | Decisions | Overturned |
|---|---|---|
Medical Necessity The plan said the care wasn’t medically necessary. The most common fight, and the most winnable. | 74 | 41.9% |
Experimental/Investigational The plan called the treatment unproven. These turn on published evidence, so the appeal is a literature argument. | 23 | 47.8% |
Typical time to a decision
14 days
Most land between 5 and 21 days
Handled as urgent
45.4%
Expedited when a delay would cause harm
Recent direction
Rising
21.4% → 27.3% overturned, last three years
What the reviewers wrote
Excerpts from the independent reviewers’ published findings — the actual reasoning, quoted, not summarised.
Where the denial was overturned
Findings: The physician reviewer found that the parent of a patient has requested reimbursement for either or both of the left knee arthroscopy surgeries: synovectomy (CPT code 29875) and/or chondroplasty (CPT code 29877). Authors in a study on plica syndrome noted, “Patients with plica syndrome will experience pain on the anterior aspect of the knee associated with clicking or popping. The anterior knee pain is a hallmark of plica syndrome. Pain can be brought on by rising from a chair, squatting, stairs, or other activities that load the patellofemoral joint. The history may include a twisting injury or blunt trauma, or there could be no history of injury or trauma.” Authors in another study on medial patellar plica syndrome noted, “Synovial plicae are thickenings of the synovial knee membrane; they are very frequent and often asymptomatic.
Nature of Statutory Criteria/Case Summary: The patient requested reimbursement for right knee arthroscopy with lateral release (CPT codes 29873 and 29879).A review of the medical records provided for review reveals the medical necessity for the knee arthroscopy with partial medial and partial lateral meniscectomy and the necessity for arthroscopy with a lateral release (29873) due to the given mechanical symptoms, radiographic, and MRI findings. Additionally, the removal of loose bodies would be indicated with MRI and arthroscopic findings. However, the medical records, including physical examination and diagnostic tests, do not indicate the medical necessity for arthroscopy with surgical abrasion arthroplasty or multiple drilling of microfracture (29879).
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: The patient has requested authorization and coverage for surgical arthroscopy of the left shoulder with decompression and rotator cuff repair and coracoacromial ligament release for shoulder. Researchers explain, “Rotator cuff tear progression can be difficult to predict. Factors associated with tear enlargement include increasing symptoms, advanced age, involvement of two or more tendons, and rotator cable lesion. Nonsurgical treatment can be effective for patients with full-thickness tears.
Physician #1: The patient is a 61-year-old male with left knee chondromalacia. He is requesting reimbursement for an articular cartilage paste grafting procedure that was performed in November 2005. The Health Plan has denied coverage for the procedure at issue citing a lack of peer-reviewed literature supporting its use.There is no class I data to support the use of this procedure for knee osteochondral defects. The procedure remains experimental at this time. There is insufficient evidence that articular cartilage paste grafting is efficacious in this clinical setting. Furthermore, there were alternative standard procedures available for this patient’s condition. Therefore, I have determined that the procedure at issue was not likely to be more beneficial for treatment of the patient’s medical condition than any available standard therapy.
Figures and quotations on this page come from 42,749 published decisions in the California DMHC Independent Medical Review dataset. These are California outcomes — every state runs an equivalent external review, but the rates here are California’s. Excerpts are quoted verbatim from the public record and describe this treatment generally, not any individual case.
How to use this in your appeal
These are outcomes from California’s external review program — an independent physician panel that binds the insurer. Every state has an equivalent process, and internal appeals succeed even more often. Cite the outcome record for Arthroscopywhen you appeal: reviewers routinely find that denials like yours didn’t hold up.
SOURCE: CALIFORNIA DMHC INDEPENDENT MEDICAL REVIEW OUTCOMES (CHHS OPEN DATA) · DERIVED AGGREGATE STATISTICS ONLY · 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.