ICD-10-CM code "C21": Malignant neoplasm of anus and anal canal (2024)

Overview

ICD-10 CodeC21
DescriptionMalignant neoplasm of anus and anal canal
Hierarchy
  1. Neoplasms (C00-D49)
  2. Malignant neoplasms of digestive organs (C15-C26)
  3. Malignant neoplasm of anus and anal canal (C21)
Billable statusNon billable code

Excludes

  1. Neoplasms (C00-D49)
  2. Malignant neoplasms of digestive organs (C15-C26)

    Type 1Kaposi's sarcoma of gastrointestinal sites (C46.4)

    Type 2gastrointestinal stromal tumors (C49.A-)

  3. Malignant neoplasm of anus and anal canal (C21)

    Type 2malignant carcinoid tumors of the colon (C7A.02-)

    Type 2malignant melanoma of anal margin (C43.51)

    Type 2malignant melanoma of anal skin (C43.51)

    Type 2malignant melanoma of perianal skin (C43.51)

    Type 2other and unspecified malignant neoplasm of anal margin (C44.500, C44.510, C44.520, C44.590)

    Type 2other and unspecified malignant neoplasm of anal skin (C44.500, C44.510, C44.520, C44.590)

    Type 2other and unspecified malignant neoplasm of perianal skin (C44.500, C44.510, C44.520, C44.590)

Includes

  1. Neoplasms (C00-D49)
  2. Malignant neoplasms of digestive organs (C15-C26)
  3. Malignant neoplasm of anus and anal canal (C21)

Subcategories