Magnetic Resonance Imaging denials in California external review

In the California DMHC record, independent physician reviewers decided 29 published external-review cases involving Magnetic Resonance Imagingand overturned the plan’s denial in 27.6%. That is a historical result among cases that reached this program, not a forecast for an individual appeal.

California DMHC decisions
29
2009–2025
Overturned
27.6%
8 denials reversed

Conditions behind Magnetic Resonance Imaging denials

What insurers denied — and how those fights ended.
CategoryDecisionsOverturned
Knee Pain5
60%
Typical time to a decision
7 days
Most land between 4 and 21 days
Handled as urgent
48.3%
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

Nature of Statutory Criteria/Case Summary: An enrollee has requested authorization and coverage for magnetic resonance imaging for treatment of the enrollee’s knee pain.Findings: The physician reviewer found that the American College of Radiology (ACR) has established appropriateness criteria for the evaluation of various clinical presentations. Under their category of chronic atraumatic knee pain, the first recommended study is a plain x-ray, which this patient has already had. In patients with demonstrated degenerative changes, in consideration for surgery, the ACR considers MRI appropriate. As stated by the ACR, “MRI is more sensitive than radiography and provides more specific information compared with radionuclide bone scan.
Medical Necessity · 2017 · IMR MN17-26524
Nature of Statutory Criteria/Case Summary: The patient has requested authorization and coverage for open magnetic resonance imaging (MRI). A researcher explains, “Most women choose silicone gel-filled breast implants because of their natural feel; however, core clinical trial data show a high risk of rupture over ten years. Because cross-linking makes silicone gel somewhat cohesive, it tends to remain within the capsular scar if the shell ruptures, maintaining the volume of the breast. This is why patients are not aware that an implant has ruptured and why it is called a ‘silent rupture.’ The ruptured implant may remain in place for years until discovered at a subsequent implant procedure, such as a size change, or diagnosed during evaluation of signs or symptoms, such as capsular contracture, pain, a lump, change in shape, or abnormal mammogram. At this time, the U.S.
Medical Necessity · 2024 · IMR MN24-41394

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 authorization and coverage for magnetic resonance imaging to determine if there is sciatic nerve damage for evaluation of his history of lower back pain. Findings: The physician reviewer found that the medical literature supports obtaining an imaging study when it will change the course of therapy. The correlation between magnetic resonance findings and clinical symptoms requires strict clinical correlation. The American College of Radiology (ACR) has established appropriateness criteria to evaluate various clinical presentations, including low back pain. The guidelines indicate that imaging patients with acute low back pain (LBP), of less than six weeks duration and no red-flag symptoms provide no clinical benefit (ACR Appropriateness Criteria).
Medical Necessity · 2017 · IMR MN17-25159
Findings: The physician reviewer found that Nature of Statutory Criteria/Case Summary: The patient has requested authorization and coverage for magnetic resonance imaging (MRIs) for the following body parts: left knee, left hip, thoracic spine, lumbar spine, sacral, and pelvis. Regarding the patient’s thoracic, lumbar, and sacral pain, according to Radiology guidelines, if the pain persists after four-to-six weeks of conservative management, and the patient is a surgical or intervention candidate, then an MRI of the thoracic/lumbar spine is the usually the appropriate next examination. Radiographs are the initial imaging examination that are recommended. In this case, the patient has not undergone radiographs, so these MRIs are not indicated.
Medical Necessity · 2023 · IMR MN23-40131

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 Magnetic Resonance Imaging, 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 Magnetic Resonance Imaging? Use the California record to prepare.

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