MCMedicalCodingSoftware
D01.1

D01.1: Carcinoma in situ of rectosigmoid junction

Billable / specific codeICD-10-CM

D01.1 is a billable, specific ICD-10-CM code for carcinoma in situ of rectosigmoid junction. It is valid for submission on a claim.

Check D01.1 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above D01.1

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 D01.1

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

  • D01.0Carcinoma in situ of colon

Risk adjustment

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

Medicare coverage

D01.1 is named in 22 Medicare coverage policies: 22 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

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.