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D09.9

D09.9: Carcinoma in situ, unspecified

Billable / specific codeICD-10-CM

D09.9 is a billable, specific ICD-10-CM code for carcinoma in situ, unspecified. It is valid for submission on a claim.

Check D09.9 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above D09.9

A category’s note binds every code beneath it.

Written on D09: Carcinoma in situ of other and unspecified sites

  • melanoma in situ (D03.-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

D09.9 is named in 4 Medicare coverage policies: 4 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A57788Billing and Coding: Peripheral Nerve Blocks
  • A58652Billing and Coding: MolDX: Lab-Developed Tests for Inherited Cancer Syndromes in Patients with Cancer
  • A58679Billing and Coding: MolDX: Lab-Developed Tests for Inherited Cancer Syndromes in Patients with Cancer
  • A58756Billing and Coding: MolDX: Lab-Developed Tests for Inherited Cancer Syndromes in Patients with Cancer

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under D09

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.