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C21 Malignant neoplasm of anus and anal canal
BackC21.0Malignant neoplasm of anus, unspecifiedCategoryC21.1Malignant neoplasm of anal canalCategoryC21.2Malignant neoplasm of cloacogenic zoneCategoryC21.8Malignant neoplasm of overlapping sites of rectum, anus and anal canalCategory
Category
C21
Malignant neoplasm of anus and anal canal
EXCLUDES
Excludes2: malignant carcinoid tumors of the colon (C7A.02-)
malignant melanoma of anal margin (C43.51)
malignant melanoma of anal skin (C43.51)
malignant melanoma of perianal skin (C43.51)
other and unspecified malignant neoplasm of anal margin (C44.500, C44.510, C44.520, C44.590)
other and unspecified malignant neoplasm of anal skin (C44.500, C44.510, C44.520, C44.590)
other and unspecified malignant neoplasm of perianal skin (C44.500, C44.510, C44.520, C44.590)
malignant melanoma of anal margin (C43.51)
malignant melanoma of anal skin (C43.51)
malignant melanoma of perianal skin (C43.51)
other and unspecified malignant neoplasm of anal margin (C44.500, C44.510, C44.520, C44.590)
other and unspecified malignant neoplasm of anal skin (C44.500, C44.510, C44.520, C44.590)
other and unspecified malignant neoplasm of perianal skin (C44.500, C44.510, C44.520, C44.590)
- Chapter
- II · Neoplasms
- Section
- C15-C26
- Valid from
Source
CMS ICD-10-CM Tabular List, edition FY2026.