49% overturnedAppeal outcomes · Imaging

Denied ultrasound: what independent reviewers actually decided

Ultrasound is rarely denied on cost — it is denied on whether the clinical question needed answering at all.

Diagnostic sonography of a named region, with or without Doppler, billed with region-specific codes and ordered by the treating physician.

What the independent reviewers decided

49%

overturned by the independent reviewer

42

of 86 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 ultrasound

  • The policy treats the indication as not requiring imaging at this point in the workup.
  • A repeat study falls inside an interval the policy restricts.
  • The study is characterised as screening where the policy covers it only diagnostically.
  • The requested study duplicates one recently performed.

What actually carried the cases that won

Objective findings led the reversals, and the reading is the same as for the rest of the imaging group with one difference: because ultrasound is inexpensive, the plan's position is usually about necessity rather than modality. The overturned records established a finding on examination that the study was meant to characterise. Clinical guidelines and peer-reviewed literature were the authorities.

What the record showedShare of overturned decisions
Objective findings were documented88%
A published guideline supported the request52%
The severity or urgency was documented21%
The diagnosis was confirmed19%
The condition was documented as chronic or long-standing17%
The functional impact on the patient was documented7%
Prior treatment was documented7%

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

  • Clinical guidelines — in 50% of the overturned decisions
  • Peer-reviewed literature — in 43% of the overturned decisions
  • Specialty-society criteria — in 40% of the overturned decisions
  • Standard of care — in 2% of the overturned decisions

ultrasound denials — frequently asked

Is a denied ultrasound worth appealing?
49% of 86 California independent medical reviews were overturned — an even split on a smaller sample than MRI or CT, which is worth keeping in mind when reading the rate.
Why does a low-cost study get denied at all?
Usually as duplication or as screening. Both are answerable from the record: what changed since the prior study, or what finding this study is characterising.
Does Doppler change the analysis?
It is often a separately reviewed component. Check which code was denied — a denial of the Doppler component is a different dispute from a denial of the base study.

Related guides

CO-50 — not medically necessaryDuplicate claim denialsPrior authorization denials

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.

When the appeal has to be written, and cited

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