C77: Secondary and unspecified malignant neoplasm of lymph nodes
Codes under C77 (Secondary and unspecified malignant neoplasm of lymph nodes). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| C77.0 | Secondary and unspecified malignant neoplasm of lymph nodes of head, face and neck | ✓ |
| C77.0 | Secondary and unspecified malignant neoplasm of lymph nodes of head, face and neck | ✓ |
| C77.1 | Secondary and unspecified malignant neoplasm of intrathoracic lymph nodes | ✓ |
| C77.1 | Secondary and unspecified malignant neoplasm of intrathoracic lymph nodes | ✓ |
| C77.2 | Secondary and unspecified malignant neoplasm of intra-abdominal lymph nodes | ✓ |
| C77.2 | Secondary and unspecified malignant neoplasm of intra-abdominal lymph nodes | ✓ |
| C77.3 | Secondary and unspecified malignant neoplasm of axilla and upper limb lymph nodes | ✓ |
| C77.3 | Secondary and unspecified malignant neoplasm of axilla and upper limb lymph nodes | ✓ |
| C77.4 | Secondary and unspecified malignant neoplasm of inguinal and lower limb lymph nodes | ✓ |
| C77.4 | Secondary and unspecified malignant neoplasm of inguinal and lower limb lymph nodes | ✓ |
| C77.5 | Secondary and unspecified malignant neoplasm of intrapelvic lymph nodes | ✓ |
| C77.5 | Secondary and unspecified malignant neoplasm of intrapelvic lymph nodes | ✓ |
| C77.8 | Secondary and unspecified malignant neoplasm of lymph nodes of multiple regions | ✓ |
| C77.8 | Secondary and unspecified malignant neoplasm of lymph nodes of multiple regions | ✓ |
| C77.9 | Secondary and unspecified malignant neoplasm of lymph node, unspecified | ✓ |
| C77.9 | Secondary and unspecified malignant neoplasm of lymph node, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code C77?
C77 is an ICD-10-CM category covering Secondary and unspecified malignant neoplasm of lymph nodes. It contains 16 more specific diagnosis codes, 16 of which are billable.
Is C77 a billable code?
No — C77 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 C77.0 — Secondary and unspecified malignant neoplasm of lymph nodes of head, face and neck). 16 of the 16 codes under C77 are billable.
What codes fall under C77?
C77 includes C77.0, C77.0, C77.1, C77.1, C77.2, plus 11 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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