Malignant neoplasm of anus and anal canal C21
- C21 should not be used for reimbursement purposes. Please select a more specific diagnosis below.
- The 2019 edition of ICD-10-CM C21 became effective on October 1, 2018.
- This is the American ICD-10-CM version of C21 - other international versions of ICD-10 C21 may differ.
Type 2 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)
Codes: = Billable
- C21 Malignant neoplasm of anus and anal canal
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.