ICD-10 Code
International Classification of Diseases, 10th Revision
Apr 22, 2019
  ICD-10 Code for Malignant neoplasm of colon, unspecified C18.9

C18.9 is a valid1 ICD 10 diagnosis code.

C18.9 is valid for submission for HIPAA-covered transactions.

Chapter 2 Neoplasms (C00-D49)
Section C15-C26 Malignant neoplasms of digestive organs (C15-C26)
Category C18 Malignant neoplasm of colon

• See below for any additional coding requirements that may be necessary.

• Check for any notations, inclusions and/or exclusions that are specific to this ICD 10 code before using

1 No additional coding requirements necessary.
Inclusion Term
  • Malignant neoplasm of large intestine NOS

Related Terms to “Malignant neoplasm of colon, unspecified”

  • AdenocarcinomaSee also Neoplasm, malignant, by site
    • in
      • adenomatous
        • polyposis coli - C18.9
  • Carcinoma(malignant)See also Neoplasm, by site, malignant
    • in
      • adenomatous
        • polyposis coli - C18.9
  • PolyposisSee also Polyp
    • coli(adenomatous) - D12.6
      • adenocarcinoma in - C18.9
      • carcinoma in - C18.9
See the ICD-10-CM Coding Guidelines.

Questions related to C18.9 Malignant neoplasm of colon, unspecified

When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.