74% overturnedAppeal outcomes · Surgery

Denied mastectomy: what independent reviewers actually decided

Mastectomy denials are usually risk-reduction disputes, and the appeals that won argued from published risk criteria rather than from preference.

Mastectomy billed with procedure-specific codes, including prophylactic and contralateral procedures that plans review against risk criteria.

What the independent reviewers decided

74%

overturned by the independent reviewer

25

of 34 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 mastectomy

  • A prophylactic or contralateral procedure is denied as not meeting the policy's risk threshold.
  • Genetic testing results the policy relies on are absent or do not include a variant the policy names.
  • Family history is documented narratively rather than in the terms the risk model requires.
  • The procedure is characterised as elective on the file as submitted.

What actually carried the cases that won

Guideline support led here, with clinical guidelines and specialty-society criteria as the authorities — a coherent picture for a decision area where published risk criteria are well established and widely accepted. The reversals located the patient inside a named risk category. This is the smallest sample of the procedures with a page, so read the rate as a direction.

What the record showedShare of overturned decisions
A published guideline supported the request48%
The condition was documented as chronic or long-standing24%
Objective findings were documented20%
The diagnosis was confirmed20%
The functional impact on the patient was documented16%
The severity or urgency was documented8%
Conservative treatment was documented as failed4%

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 48% of the overturned decisions
  • Specialty-society criteria — in 16% of the overturned decisions
  • Standard of care — in 16% of the overturned decisions
  • Peer-reviewed literature — in 8% of the overturned decisions

mastectomy denials — frequently asked

Is a denied mastectomy worth appealing?
California reviewers reversed 25 of the 34 mastectomy disputes they decided. Thirty-four is a small base — the direction is clear, the precise figure less so.
What carries a risk-reduction appeal?
A named risk category from published criteria, with the evidence the criteria call for — the genetic result, or the family history expressed the way the risk model expresses it.
Does reconstruction travel with it?
It is a separate determination, and federal law addresses reconstruction after mastectomy specifically. A denial of reconstruction is a different appeal from a denial of the mastectomy.

Related guides

CO-50 — not medically necessaryCosmetic vs reconstructive denialsOncology 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.

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