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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

Hyperbaric O2 Chamb denials at external review

When a California health plan denied care in the hyperbaric o2 chamb class and the enrollee took it to Independent Medical Review, this is what independent physician reviewers decided.

28.1%

Overturned
9 of 32
Era
2021-2025
Jurisdiction
California DMHC IMR
Published class
Hyperbaric O2 Chamb
Median days to decision
36
All years
34.2% of 73
9 overturned23 upheld

Authorities named in this class

computed
  • FDA2

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
  • Skin10
  • Post-surgical complications5
  • Ear, nose & throat4
  • Endocrine & metabolic3
  • Cancer2
  • Orthopedic & musculoskeletal2
  • Blood disorders1
  • CNS & neuromuscular1

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The specific conditions inside this class

below n=30, no rate is claimed
  • Other10
  • Hearing Problem/Loss4
  • Diabetes3
  • Infection3
  • Skin Ulcer2
  • Brain Injury/Concussion1
  • Breast1
  • COVID 191

By review type

computed
  • Medical Necessity26
  • Experimental/Investigational6

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.