C26: Malignant neoplasm of other and ill-defined digestive organs
Codes under C26 (Malignant neoplasm of other and ill-defined digestive organs). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| C26.0 | Malignant neoplasm of intestinal tract, part unspecified | ✓ |
| C26.0 | Malignant neoplasm of intestinal tract, part unspecified | ✓ |
| C26.1 | Malignant neoplasm of spleen | ✓ |
| C26.1 | Malignant neoplasm of spleen | ✓ |
| C26.9 | Malignant neoplasm of ill-defined sites within the digestive system | ✓ |
| C26.9 | Malignant neoplasm of ill-defined sites within the digestive system | ✓ |
Frequently asked questions
What is ICD-10-CM code C26?
C26 is an ICD-10-CM category covering Malignant neoplasm of other and ill-defined digestive organs. It contains 6 more specific diagnosis codes, 6 of which are billable.
Is C26 a billable code?
No — C26 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example C26.0 — Malignant neoplasm of intestinal tract, part unspecified). 6 of the 6 codes under C26 are billable.
What codes fall under C26?
C26 includes C26.0, C26.0, C26.1, C26.1, C26.9, plus 1 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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