C26.9

Billable

Malignant neoplasm of ill-defined sites within the digestive system

C26.9 is the ICD-10-CM code for Malignant neoplasm of ill-defined sites within the digestive system. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
C00-D49
Parent
C26
Edition
FY2026

C00-D49 Neoplasms

Includes

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

Excludes1 — not coded here

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

Frequently asked questions

What is ICD-10 code C26.9?
C26.9 is the ICD-10-CM code for "Malignant neoplasm of ill-defined sites within the digestive system". It falls under C00-D49 Neoplasms.
Is C26.9 a billable code?
Yes — C26.9 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from C26.9?
Excludes1 (not coded here): malignant neoplasm of abdominal NOS (C76.2); malignant neoplasm of intra-abdominal NOS (C76.2).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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