ICD-10-CM · Chapter 2 · C00-D49
C7A Malignant neuroendocrine tumors
Excludes 2 (not included here)
- malignant pancreatic islet cell tumors (C25.4)
- Merkel cell carcinoma (C4A.-)
Use Additional Code
- code to identify any associated endocrine syndrome, such as:
- carcinoid syndrome (E34.00)
Code Also
- any associated multiple endocrine neoplasia [MEN] syndromes (E31.2-)
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| C7A..0 | Malignant carcinoid tumors | No |
| C7A..00 | Malignant carcinoid tumor of unspecified site | Yes |
| C7A..01 | Malignant carcinoid tumors of the small intestine | No |
| C7A..010 | Malignant carcinoid tumor of the duodenum | Yes |
| C7A..011 | Malignant carcinoid tumor of the jejunum | Yes |
| C7A..012 | Malignant carcinoid tumor of the ileum | Yes |
| C7A..019 | Malignant carcinoid tumor of the small intestine, unspecified portion | Yes |
| C7A..02 | Malignant carcinoid tumors of the appendix, large intestine, and rectum | No |
| C7A..020 | Malignant carcinoid tumor of the appendix | Yes |
| C7A..021 | Malignant carcinoid tumor of the cecum | Yes |
| C7A..022 | Malignant carcinoid tumor of the ascending colon | Yes |
| C7A..023 | Malignant carcinoid tumor of the transverse colon | Yes |
| C7A..024 | Malignant carcinoid tumor of the descending colon | Yes |
| C7A..025 | Malignant carcinoid tumor of the sigmoid colon | Yes |
| C7A..026 | Malignant carcinoid tumor of the rectum | Yes |
| C7A..029 | Malignant carcinoid tumor of the large intestine, unspecified portion | Yes |
| C7A..09 | Malignant carcinoid tumors of other sites | No |
| C7A..090 | Malignant carcinoid tumor of the bronchus and lung | Yes |
| C7A..091 | Malignant carcinoid tumor of the thymus | Yes |
| C7A..092 | Malignant carcinoid tumor of the stomach | Yes |
| C7A..093 | Malignant carcinoid tumor of the kidney | Yes |
| C7A..094 | Malignant carcinoid tumor of the foregut, unspecified | Yes |
| C7A..095 | Malignant carcinoid tumor of the midgut, unspecified | Yes |
| C7A..096 | Malignant carcinoid tumor of the hindgut, unspecified | Yes |
| C7A..098 | Malignant carcinoid tumors of other sites | Yes |
| C7A..1 | Malignant poorly differentiated neuroendocrine tumors | Yes |
| C7A..8 | Other malignant neuroendocrine tumors | Yes |
Last reviewed: September 2026