Osteoarthritis Of The Left Knee denials in California external review

In the California DMHC record, independent physician reviewers decided 43 published external-review cases involving osteoarthritis of the left kneeand overturned the plan’s denial in 83.7%. That is a historical result among cases that reached this program, not a forecast for an individual appeal.

California DMHC decisions
43
2018–2026
Overturned
83.7%
36 denials reversed

Most-fought treatments for osteoarthritis of the left knee

What insurers denied — and how those fights ended.
TreatmentDecisionsOverturned
Euflexxa Injection12
100%
Typical time to a decision
12 days
Most land between 4 and 20 days
Handled as urgent
51.2%
Expedited when a delay would cause harm
Recent direction
Falling
87.5%78.9% 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

Nature of Statutory Criteria/ Case Summary: The enrollee is requesting authorization and coverage for Synvisc-One injection to the left knee. The enrollee has moderate osteoarthritis of the left knee. An x-ray of the left knee showed left knee osteoarthritis with 2mm medial asymmetric joint space narrowing and mild to moderate degenerative changes to the medial compartment. On focused physical exam of the left knee, the enrollee had tenderness to palpation at the joint line but had full range of motion (0 degrees extension to 130 degrees flexion) and no joint instability. The record indicates the enrollee has been treated with ibuprofen and physical therapy for more than six months; and was now in the process of getting a knee brace. He received a left knee cortisone injection on this visit for refractory knee pain.
Medical Necessity · 2019 · IMR MN19-31749
Nature of Statutory Criteria/Case Summary: A patient has requested authorization and coverage for Durolane knee injections for their medical condition of knee pain. Findings: The physician reviewer found that The Health Plan has denied this request indicating that the requested medication is not medically necessary for treatment of the patient’s primary osteoarthritis of the left knee. The submitted documentation supports the medical necessity of the requested medication. There is significant current medial evidence supporting the use of viscosupplementation for management of osteoarthritis of the knees.
Medical Necessity · 2018 · IMR MN18-29036

Where the denial was upheld

Worth reading too — these show what an appeal has to overcome.
Nature of Statutory Criteria/Case Summary: An enrollee has requested reimbursement for a computerized tomography (CT) scan of the left knee. The patient presented to her provider with severe degenerative osteoarthritis of the left knee. The treatment plan included a left knee arthroplasty. The provider requested pre-operative imaging to assess for both bone deformity and bone loss and for preoperative computer templating for robotic-assisted surgery. The detailed documentation failed to demonstrate evidence of any unusual bony anatomy of the left knee or any retained surgical hardware in her left knee. One study concluded that “Although previous results showed more outliers regarding posterior slope for CT-based patient-specific instruments (PSIs), no difference in revision rate or the outcome of patient-reported outcome measurements (PROMs) was found at 2-year follow-up.
Experimental/Investigational · 2024 · IMR EI24-41091
Findings: The physician reviewer found that a patient has requested authorization and coverage for left total knee arthroplasty (TKA). The authors of a study state that “Pain, limitations in quality-of-life because of osteoarthritis, radiological confirmation of osteoarthritis, and inadequate response to conservative treatment should be reported. Moreover, medical history, clinical examination and radiographic findings need to be conclusive.” The authors concluded that “the patient’s level of suffering and discomfort defines the timing of an arthroplasty.” In this case, the patient reported to the provider severe left knee pain localized to the medial joint and patellofemoral joint with intermittent swelling and waking up at night. The patient’s range of motion was 2 to 125 degrees with pain and crepitus, and positive McMurray and patellar grind tests.
Medical Necessity · 2025 · IMR MN25-44385

Figures and quotations on this page come from 42,749 published decisions in the California DMHC Independent Medical Review dataset. These are California external-review outcomes. Other state and federal programs have different eligibility rules, processes, and current availability; the rates here do not transfer to those programs or predict an individual result. Excerpts are quoted verbatim from the public record and describe this condition generally, not any individual case.

How to use this in your appeal

These outcomes describe eligible cases completed through California DMHC’s Independent Medical Review program. They do not estimate the chance that an internal appeal, an external review in another jurisdiction, or your individual case will succeed. Use the record to identify evidence patterns involving osteoarthritis of the left knee, then check the rights and deadlines that apply to your plan.

SOURCE: CALIFORNIA DMHC INDEPENDENT MEDICAL REVIEW OUTCOMES (CHHS OPEN DATA) · AGGREGATES + DEIDENTIFIED DECISION EXCERPTS/REFERENCE IDS · 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.

Fighting a denial for osteoarthritis of the left knee? Use the California record to prepare.

Explain my denial — freeStart my appeal · $39