C7A — Malignant neuroendocrine tumors
C7A is a non-billable header ICD-10-CM code for malignant neuroendocrine tumors. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
- malignant pancreatic islet cell tumors (C25.4)
- Merkel cell carcinoma (C4A.-)
Use additional code
Add a secondary code to capture the detail described below.
- code to identify any associated endocrine syndrome, such as:
- carcinoid syndrome (E34.00)
Code also
Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.
- any associated multiple endocrine neoplasia [MEN] syndromes (E31.2-)
Other codes that can never be billed with C7A
These codes carry an Excludes1 note pointing at C7A. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading C7A alone.
- C64Malignant neoplasm of kidney, except renal pelvis
- C75Malignant neoplasm of other endocrine glands and related structures
- C80Malignant neoplasm without specification of site
- C17Malignant neoplasm of small intestine
- C18Malignant neoplasm of colon
- C19Malignant neoplasm of rectosigmoid junction
- C20Malignant neoplasm of rectum
- C34Malignant neoplasm of bronchus and lung
Risk adjustment
C7A does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead C7A
3 child codes. Green means billable.
Questions about C7A
- Is C7A a billable ICD-10-CM code?
- No. C7A is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does C7A sit in the tabular list?
- Neoplasms (C00-D49), in the block Malignant neuroendocrine tumors (C7A).