C7B: Secondary neuroendocrine tumors
Codes under C7B (Secondary neuroendocrine tumors). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| C7B.0 | Secondary carcinoid tumors | — |
| C7B.0 | Secondary carcinoid tumors | — |
| C7B.00 | Secondary carcinoid tumors, unspecified site | ✓ |
| C7B.00 | Secondary carcinoid tumors, unspecified site | ✓ |
| C7B.01 | Secondary carcinoid tumors of distant lymph nodes | ✓ |
| C7B.01 | Secondary carcinoid tumors of distant lymph nodes | ✓ |
| C7B.1 | Secondary Merkel cell carcinoma | ✓ |
| C7B.1 | Secondary Merkel cell carcinoma | ✓ |
| C7B.02 | Secondary carcinoid tumors of liver | ✓ |
| C7B.02 | Secondary carcinoid tumors of liver | ✓ |
| C7B.03 | Secondary carcinoid tumors of bone | ✓ |
| C7B.03 | Secondary carcinoid tumors of bone | ✓ |
| C7B.04 | Secondary carcinoid tumors of peritoneum | ✓ |
| C7B.04 | Secondary carcinoid tumors of peritoneum | ✓ |
| C7B.8 | Other secondary neuroendocrine tumors | ✓ |
| C7B.8 | Other secondary neuroendocrine tumors | ✓ |
| C7B.09 | Secondary carcinoid tumors of other sites | ✓ |
| C7B.09 | Secondary carcinoid tumors of other sites | ✓ |
Frequently asked questions
What is ICD-10-CM code C7B?
C7B is an ICD-10-CM category covering Secondary neuroendocrine tumors. It contains 18 more specific diagnosis codes, 16 of which are billable.
Is C7B a billable code?
No — C7B 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 C7B.0 — Secondary carcinoid tumors). 16 of the 18 codes under C7B are billable.
What codes fall under C7B?
C7B includes C7B.0, C7B.0, C7B.00, C7B.00, C7B.01, plus 13 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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