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Everything here is free to read, and nothing here is a claim about your case. Built from California’s published records and modified by us — not official government data. How these numbers were made.

Treatment class · subcategory · California

MRI denials at external review

When a California health plan denied care in the mri class and the enrollee took it to Independent Medical Review, this is what independent physician reviewers decided.

52.2%

Overturned
152 of 291
Era
2021-2025
Jurisdiction
California DMHC IMR
Published class
MRI
Median days to decision
34
All years
42.8% of 1,066
152 overturned139 upheld

What stands out here

computed from this class
  • most-cited standard

    Reviewers named American College of Rheumatology more than any other standard here — 145 decisions, which came out at 54.5%. Citing a standard and the outcome share a cause; this is not the effect of naming it.

  • concentrated

    59% of these disputes involved orthopedic & musculoskeletal alone (n=171, 52.0% overturned), so the headline figure for mri is largely that pairing.

The trend, with its era

computed
0%25%50%75%100%SB 1410 field mandate64.0%20062010201520202025Share of decisions overturning the health plan · years below n=30 omitted

Hover the chart for a year’s counts. Series stops at 2025 — report year 2026 uses a different category vocabulary.

What reviewers relied on

3 validated codes

California requires each published decision to carry “a detailed case summary that includes the specific standards, criteria, and medical and scientific evidence, if any, that led to the case decision” (Health & Safety Code § 1374.33(h)(1)(K)). These are the elements our extraction found in this class, split by how the decision came out.

What the reviewer relied onIn overturnsIn upholds
the FDA label or approval status1%n=1520%n=139
a standardised level-of-care instrument1%n=1520%n=139
a California statutory definition0%n=1521%n=139

Read as description, not instruction. These are patterns in what reviewers wrote, not steps to follow, and no combination of them predicts an outcome. Only codes that cleared the validation gate appear — thirteen did not.

Authorities named in this class

computed
  • American College of Rheumatology54.5%145
  • NCCN4
  • FDA1
  • MCG / Milliman1

A rate here is the outcome of decisions that named the authority, not the effect of naming it. Reviewers cite the standard they applied; the citation and the outcome share a cause.

By condition

computed
  • Overturned — the reviewer did not sustain the denial
  • Upheld — the reviewer sustained the denial
  • Orthopedic & musculoskeletal52.0%171
  • Genitourinary & kidney43.3%30
  • CNS & neuromuscular23
  • Cancer15
  • Cardiac & circulatory10
  • Digestive & GI8
  • Prevention & wellness6
  • Ear, nose & throat4

Browse all condition classes · Pick your own pair

The specific conditions inside this class

below n=30, no rate is claimed
  • Back Pain46.3%41
  • Other57.1%35
  • Knee Problem/Pain50.0%30
  • Shoulder Problem/Pain23
  • Female Breast Dis/Lump/Cyst17
  • Neck Problem/Pain16
  • Vertebral Disc Prob15
  • Breast8

By review type

computed
  • Medical Necessity52.9%278
  • Experimental/Investigational13

Medical-necessity review asks whether the care is needed. Experimental/investigational review asks whether it is likely to be more beneficial than standard therapy — a harder statutory test, and the rates show it.

Every figure on this page is conditional on a denial having reached external review. Fewer than 1% of denials are appealed internally at all, so this describes denials that were fought to the end — not denials in general — and it describes California only. Who this does not cover.

Free help, first: the California DMHC Help Center files your Independent Medical Review at no cost — 1-888-466-2219, dmhc.ca.gov.