C7A: Malignant neuroendocrine tumors

Codes under C7A (Malignant neuroendocrine tumors). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
C7A.0	Malignant carcinoid tumors	—
C7A.00	Malignant carcinoid tumor of unspecified site	✓
C7A.01	Malignant carcinoid tumors of the small intestine	—
C7A.1	Malignant poorly differentiated neuroendocrine tumors	✓
C7A.02	Malignant carcinoid tumors of the appendix, large intestine, and rectum	—
C7A.8	Other malignant neuroendocrine tumors	✓
C7A.09	Malignant carcinoid tumors of other sites	—
C7A.010	Malignant carcinoid tumor of the duodenum	✓
C7A.011	Malignant carcinoid tumor of the jejunum	✓
C7A.012	Malignant carcinoid tumor of the ileum	✓
C7A.019	Malignant carcinoid tumor of the small intestine, unspecified portion	✓
C7A.020	Malignant carcinoid tumor of the appendix	✓
C7A.021	Malignant carcinoid tumor of the cecum	✓
C7A.022	Malignant carcinoid tumor of the ascending colon	✓
C7A.023	Malignant carcinoid tumor of the transverse colon	✓
C7A.024	Malignant carcinoid tumor of the descending colon	✓
C7A.025	Malignant carcinoid tumor of the sigmoid colon	✓
C7A.026	Malignant carcinoid tumor of the rectum	✓
C7A.029	Malignant carcinoid tumor of the large intestine, unspecified portion	✓
C7A.090	Malignant carcinoid tumor of the bronchus and lung	✓
C7A.091	Malignant carcinoid tumor of the thymus	✓
C7A.092	Malignant carcinoid tumor of the stomach	✓
C7A.093	Malignant carcinoid tumor of the kidney	✓
C7A.094	Malignant carcinoid tumor of the foregut, unspecified	✓
C7A.095	Malignant carcinoid tumor of the midgut, unspecified	✓
C7A.096	Malignant carcinoid tumor of the hindgut, unspecified	✓
C7A.098	Malignant carcinoid tumors of other sites	✓

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