2024 ICD-10-CM Diagnosis Code C18

by

Malignant neoplasm of colon

  • C18 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2024 edition of ICD-10-CM C18 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of C18 – other international versions of ICD-10 C18 may differ.

Type 1 Excludes

  • malignant carcinoid tumors of the colon (C7A.02-)

The following code(s) above C18 contain annotation back-references

 that may be applicable to C18:

  • C00-D49  Neoplasms
  • C15-C26  Malignant neoplasms of digestive organs

Clinical Information

  • A primary or metastatic malignant neoplasm that affects the colon. Representative examples include carcinoma, lymphoma, and sarcoma.

Code History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change

Code annotations containing back-references to C18: