2025
ICD-10-CM
Diagnosis
Code

C21 Malignant neoplasm of anus and anal canal

  • Non-billable
  • 2016–2025

C21 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Malignant neoplasm of anus and anal canal.

Type 2 excludes

Codes

Versions

  1. 2025

    No changes

  2. 2024

    No changes

  3. 2023

    No changes

  4. 2022

    No changes

  5. 2021

    No changes

  6. 2020

    No changes

  7. 2019

    No changes

  8. 2018

    No changes

  9. 2017

    No changes

  10. 2016

    New code