2026 ICD-10-CM Diagnosis Code C7AMalignant neuroendocrine tumors
C7A is a non-billable ICD-10-CM category code for malignant neuroendocrine tumors, so it cannot be submitted on claims. Use a more specific code from this category instead, such as C7A.00, C7A.010, C7A.011, and C7A.012.
Code Identity
Code Classification
Specific Coding for Malignant neuroendocrine tumorsOverview
Non-specific codes like C7A require more characters. Use one of these billable codes instead:
C7A.0 for Malignant carcinoid tumors
Use C7A.00 for Malignant carcinoid tumor of unspecified site
C7A.01 for Malignant carcinoid tumors of the small intestine
C7A.02 for Malignant carcinoid tumors of the appendix, large intestine, and rectum
C7A.09 for Malignant carcinoid tumors of other sites
Use C7A.1 for Malignant poorly differentiated neuroendocrine tumors
Use C7A.8 for Other malignant neuroendocrine tumors
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Code Also
- any associated multiple endocrine neoplasia MEN syndromes E31.2
Use Additional Code
- code to identify any associated endocrine syndrome, such as:
- carcinoid syndrome E34.00
Type 2 Excludes
A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
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Code HistoryHistory
Questions About C7AOverview
Is C7A (Malignant neuroendocrine tumors) a billable code?
No. This is a category header that groups the codes for malignant neuroendocrine tumors, and headers cannot be submitted on claims. Claims for malignant neuroendocrine tumors need a more specific code from this category, such as C7A.00, C7A.010, and C7A.011.
