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ICD-10: C21

Malignant neoplasm of anus and anal canal

Coding Guidelines

Excludes 2

  • other and unspecified malignant neoplasm of perianal skin (C44.500, C44.510, C44.520, C44.590)
  • malignant melanoma of anal skin (C43.51)
  • malignant melanoma of perianal skin (C43.51)
  • malignant melanoma of anal margin (C43.51)
  • other and unspecified malignant neoplasm of anal skin (C44.500, C44.510, C44.520, C44.590)
  • other and unspecified malignant neoplasm of anal margin (C44.500, C44.510, C44.520, C44.590)
  • malignant carcinoid tumors of the colon (C7A.02-)

Subcategories

C21.1
Malignant neoplasm of anal canal
C21.0
Malignant neoplasm of anus, unspecified
C21.8
Malignant neoplasm of overlapping sites of rectum, anus and anal canal
C21.2
Malignant neoplasm of cloacogenic zone

Related Diseases

Bowen-Conradi syndrome anal canal cancer MASA syndrome Askin's tumor

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