Is C77 a billable code?
No. C77 is a header code that groups 8 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
C77: Secondary and unspecified malignant neoplasm of lymph nodes
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
C77 groups related diagnoses under secondary and unspecified malignant neoplasm of lymph nodes. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under C77
- C77.0Secondary and unspecified malignant neoplasm of lymph nodes of head, face and neck
- C77.1Secondary and unspecified malignant neoplasm of intrathoracic lymph nodes
- C77.2Secondary and unspecified malignant neoplasm of intra-abdominal lymph nodes
- C77.3Secondary and unspecified malignant neoplasm of axilla and upper limb lymph nodes
- C77.4Secondary and unspecified malignant neoplasm of inguinal and lower limb lymph nodes
- C77.5Secondary and unspecified malignant neoplasm of intrapelvic lymph nodes
- C77.8Secondary and unspecified malignant neoplasm of lymph nodes of multiple regions
- C77.9Secondary and unspecified malignant neoplasm of lymph node, unspecified
C77 questions
What does C77 mean?
C77 is the ICD-10-CM code for Secondary and unspecified malignant neoplasm of lymph nodes. It is in chapter 2, Neoplasms (C00-D49).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.