C17: Malignant neoplasm of small intestine
Codes under C17 (Malignant neoplasm of small intestine). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| C17.0 | Malignant neoplasm of duodenum | ✓ |
| C17.0 | Malignant neoplasm of duodenum | ✓ |
| C17.1 | Malignant neoplasm of jejunum | ✓ |
| C17.1 | Malignant neoplasm of jejunum | ✓ |
| C17.2 | Malignant neoplasm of ileum | ✓ |
| C17.2 | Malignant neoplasm of ileum | ✓ |
| C17.3 | Meckel's diverticulum, malignant | ✓ |
| C17.3 | Meckel's diverticulum, malignant | ✓ |
| C17.8 | Malignant neoplasm of overlapping sites of small intestine | ✓ |
| C17.8 | Malignant neoplasm of overlapping sites of small intestine | ✓ |
| C17.9 | Malignant neoplasm of small intestine, unspecified | ✓ |
| C17.9 | Malignant neoplasm of small intestine, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code C17?
C17 is an ICD-10-CM category covering Malignant neoplasm of small intestine. It contains 12 more specific diagnosis codes, 12 of which are billable.
Is C17 a billable code?
No — C17 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 C17.0 — Malignant neoplasm of duodenum). 12 of the 12 codes under C17 are billable.
What codes fall under C17?
C17 includes C17.0, C17.0, C17.1, C17.1, C17.2, plus 7 more. See the full list with descriptions and billable status above.
More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees
Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
Code the diagnosis right
Join providers across the country delivering modern virtual care with CareNiva. Free to start, ready in minutes.
100% Satisfaction Guaranteed — try it risk-free