49% overturnedAppeal outcomes · Imaging

Denied MRI: what independent reviewers actually decided

MRI is the most-appealed imaging study in the corpus, and it splits almost evenly — which makes the difference between the two halves worth reading closely.

Magnetic resonance imaging ordered by the treating physician and denied at prior authorization or after the fact, usually routed through the plan's radiology benefit programme rather than decided by the plan's own medical staff.

What the independent reviewers decided

49%

overturned by the independent reviewer

245

of 496 decisions in the corpus

Source

California DMHC independent medical review determinations, 2017-2026. Public record.

Read this as a base rate, not as your odds

These are decisions about other patients, in one state, that had already been through the plan's own internal appeal and were then sent to an outside reviewer. That population is self-selected toward disputes worth pursuing, so the rate says what happened to cases like this at that stage — not what will happen to a specific claim. It is not medical or legal advice.

Why plans deny MRI

  • The policy requires a documented course of conservative care before advanced imaging, and the record does not show it.
  • Plain films or a lesser study have not been done, and the policy treats them as prerequisites.
  • The clinical indication in the request is symptom-based, and the policy asks for a specific finding on examination.
  • The study is read as surveillance or screening rather than a response to a change in the clinical picture.

What actually carried the cases that won

Objective findings appeared in effectively every overturned MRI decision — the highest concentration of any single dimension anywhere in the corpus. The reviewers were not persuaded by the ordering physician's conclusion; they were persuaded by what the examination and the prior studies showed. A request that leads with a documented neurological deficit, a positive provocative test, or a specific abnormality on a prior film is arguing in the register these decisions were made in. Specialty-society criteria were the authority reviewers reached for most.

What the record showedShare of overturned decisions
Objective findings were documented100%
A published guideline supported the request41%
The condition was documented as chronic or long-standing38%
The severity or urgency was documented34%
Prior treatment was documented28%
The diagnosis was confirmed23%
Conservative treatment was documented as failed16%
The functional impact on the patient was documented11%

Shares are of the overturned decisions and do not sum to 100% — a single decision often rested on more than one, and some rested on none of these.

What the reviewers cited

  • Specialty-society criteria — in 53% of the overturned decisions
  • Clinical guidelines — in 19% of the overturned decisions
  • Peer-reviewed literature — in 18% of the overturned decisions
  • Standard of care — in 3% of the overturned decisions
  • FDA labeling — in 1% of the overturned decisions

MRI denials — frequently asked

Is a denied MRI worth appealing?
Of 496 California independent medical reviews of denied MRI, 49% were overturned. That near-even split is itself informative: unlike some procedures, the outcome here turns heavily on what the file contains rather than on the plan's position, which means the quality of the documentation is doing most of the work.
What does 'objective findings' mean in practice?
Something a second clinician could verify from the record: a documented deficit on neurological examination, a positive provocative manoeuvre, a measured limitation, an abnormality on a prior plain film or ultrasound. Pain scores and the referring physician's impression are not, on their own, what carried these decisions.
Does it matter that a radiology benefit manager made the decision, not the plan?
For the appeal's substance, no — the criteria are what the reviewer weighs. But it matters for who has to answer: the plan remains responsible for the determination, and several states require the plan to identify the reviewer's qualifications and the criteria applied on request.

Related guides

CO-50 — not medically necessaryPrior authorization denialsExternal review by state

Source

Denial reasons and criteria are described in plain language for reference and vary by plan and policy. This page reports what independent reviewers decided in a public California dataset; it is general information, not medical, legal, or coverage advice.

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