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D01.3

D01.3: Carcinoma in situ of anus and anal canal

Billable / specific codeICD-10-CM

D01.3 is a billable, specific ICD-10-CM code for carcinoma in situ of anus and anal canal. It is valid for submission on a claim.

Check D01.3 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • anal intraepithelial neoplasia I and II [AIN I and AIN II] (K62.82)
  • carcinoma in situ of anal margin (D04.5)
  • carcinoma in situ of anal skin (D04.5)
  • carcinoma in situ of perianal skin (D04.5)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Anal intraepithelial neoplasia III [AIN III]
  • Severe dysplasia of anus

Excludes1 inherited from the categories above D01.3

A category’s note binds every code beneath it.

Written on D01: Carcinoma in situ of other and unspecified digestive organs

  • melanoma in situ (D03.-)

Other codes that can never be billed with D01.3

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • K62.82Dysplasia of anus
  • R85.61Abnormal cytologic smear of anus
  • D04.5Carcinoma in situ of skin of trunk

Risk adjustment

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

Medicare coverage

D01.3 is named in 21 Medicare coverage policies: 21 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52480Oral Antiemetic Drugs (Replacement for Intravenous Antiemetics) - Policy Article
  • A54768Billing and Coding: Cardiac Blood Pool Imaging (Multiple Gated Acquisition Scanning- MUGA, Ventriculography) When Performed in Conjunction with Cardiotoxic Chemotherapy
  • A55937Billing and Coding: Diagnostic Colonoscopy
  • A56394Billing and Coding: Colonoscopy and Sigmoidoscopy-Diagnostic

Alphabetic index entries that lead here

  • Dysplasia›anus›severe
  • Neoplasia›intraepithelial›anal›severe

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under D01

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.