Malignant neoplasm of anus and anal canal C21

The ICD10 code for the diagnosis "Malignant neoplasm of anus and anal canal" is "C21". C21 is NOT a 'valid' or 'billable' ICD10 code. Please select a more specific diagnosis below.

  • 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:

Codes: = Billable

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.