Synvisc One denials in California external review

In the California DMHC record, independent physician reviewers decided 17 published external-review cases involving Synvisc Oneand overturned the plan’s denial in 52.9%. That is a historical result among cases that reached this program, not a forecast for an individual appeal.

California DMHC decisions
17
2011–2024
Overturned
52.9%
9 denials reversed

Conditions behind Synvisc One denials

What insurers denied — and how those fights ended.
CategoryDecisionsOverturned
Osteoarthritis Of The Knee6
50%
Knee Osteoarthritis3
66.7%
Typical time to a decision
15 days
Most land between 4 and 21 days
Handled as urgent
29.4%
Expedited when a delay would cause harm

What the reviewers wrote

Excerpts from the independent reviewers’ published findings — the actual reasoning, quoted, not summarised.

Where the denial was overturned

The enrollee is requesting authorization and coverage for an injection, Synvisc One, for the left knee. The enrollee has moderate left knee osteoarthritis. A magnetic resonance imaging (MRI) scan was ordered due to acute pain. The enrollee was status-post arthroscopic surgery and the documentation noted there was concern for another tear. The MRI results showed osteoarthritis with no new tears. His range of motion is restricted and painful. There is no effusion. There is medial femoral condyle tenderness. His patellar grind test is positive. There is no instability. The enrollee has received cortisone injections multiple times with good benefit in the beginning. However, they are no longer effective. The enrollee reported receiving less than one week of benefit from the last cortisone injection. He has received Synvisc One injections twice; one year ago and six months ago.
Medical Necessity · 2019 · IMR MN19-31779
Findings: The physician reviewer found that the patient has requested authorization and coverage for a hyaluronan injection (Synvisc One) into the left knee. Evidence from systematic reviews and randomized controlled trials indicate that although viscosupplementation may relieve knee pain in some patients with osteoarthritis, data has not established which patients will benefit. Guidelines from the American Academy of Orthopedic Surgeons (AAOS) indicate that the data on the safety and efficacy of viscosupplementation remain inconclusive. As such, the AAOS does not currently recommend viscosupplementation as routine treatment for osteoarthritis of the knees. Viscosupplementation is reserved for patients with a history of lasting benefit from prior injections and in cases where the remaining options are limited.
Medical Necessity · 2024 · IMR MN24-42743

Where the denial was upheld

Worth reading too — these show what an appeal has to overcome.
Nature of Statutory Criteria/Case Summary: A patient has requested authorization and coverage for bilateral Synvisc One injections. The Health Plan has denied this request indicating that the requested medication is not medically necessary for treatment of the patient’s primary bilateral osteoarthritis of the knees. The submitted documentation does not support the medical necessity of the requested medication. Evidence-based medical guidelines state that hyaluronic acid injections in the knee are recommended as a possible option for patients with severe osteoarthritis who have not responded adequately to recommended conservative treatments for at least three months, including failure to adequately respond to corticosteroid injections.
Medical Necessity · 2018 · IMR MN18-28326
Nature of Statutory Criteria/Case Summary: An enrollee has requested Synvisc-One injections (48 mg/6 ml syringe for treatment of the enrollee’s medical condition. Findings: The physician reviewer found that the submitted documentation fails to demonstrate the medical necessity of the requested services. The evidence-based medical guidelines state that hyaluronic acid injections in the knee are recommended as a possible option for severe osteoarthritis for patients who have not responded adequately to recommended conservative treatments, to potentially delay total knee replacement. There is insufficient evidence for other conditions, including patellofemoral arthritis, chondromalacia patella, patellofemoral syndrome, or osteochondritis dissecans. This patient presents with right knee pain with reported difficulty weight-bearing and walking.
Medical Necessity · 2016 · IMR MN16-23214

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 treatment 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 Synvisc One, 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.

Denied Synvisc One? Use the California record to prepare.

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