C26.9

ICD-10Billable

Malignant neoplasm of ill-defined sites within the dgstv sys

Official ICD-10-CM descriptor (FY2026)

Malignant neoplasm of ill-defined sites within the digestive system

C26.9 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

  • Malignant neoplasm of alimentary canal or tract NOS
  • Malignant neoplasm of gastrointestinal tract NOS

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

  • malignant neoplasm of abdominal NOS (C76.2)
  • malignant neoplasm of intra-abdominal NOS (C76.2)

Related codes in C26

Where this code sits

Parent code
C26

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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