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C21.- Malignant neoplasm of anus and anal canal

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Excludes

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