Malignant neoplasm of anus and anal canal

**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)