C21 MALIGNANT NEOPLASM OF ANUS AND ANAL CANAL

Code Information

  • Diagnosis Code: C21
  • Short Description: Malignant neoplasm of anus and anal canal
  • Long Description: Malignant neoplasm of anus and anal canal
  • Code Version: 2025 ICD-10-CM

The code C21 is NOT VALID for claim submission

Code Classification

References to Index of Diseases and Injuries

The code C21 has the following ICD-10-CM references to the Index of Diseases and Injuries

  • Type 2 Excludes Notes:
    • 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*)

Similar Codes

ICD-10 Code ICD-10 Description
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
This page was last updated on: 10/1/2024
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