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C77

Non-billable

Secondary and unspecified malignant neoplasm of lymph nodes

C77 is the ICD-10-CM code for Secondary and unspecified malignant neoplasm of lymph nodes. It is a non-billable category code — use a more specific child code such as C77.0 for billing.

Status
Header (non-billable)
Chapter
C00-D49
Subcodes
8
Edition
FY2026

C00-D49 Neoplasms

Excludes1 — not coded here

  • •malignant neoplasm of lymph nodes, specified as primary (C81-C86, C88, C96.-)
  • •mesentery metastasis of carcinoid tumor (C7B.04)
  • •secondary carcinoid tumors of distant lymph nodes (C7B.01)

Frequently asked questions

What is ICD-10 code C77?
C77 is the ICD-10-CM code for "Secondary and unspecified malignant neoplasm of lymph nodes". It falls under C00-D49 Neoplasms.
Is C77 a billable code?
No — C77 is a non-billable header code. Use a more specific child code (such as C77.0) for billing.
What are the subcodes of C77?
C77 has 8 more specific child codes, including C77.0, C77.1, C77.2.
What is excluded from C77?
Excludes1 (not coded here): malignant neoplasm of lymph nodes, specified as primary (C81-C86, C88, C96.-); mesentery metastasis of carcinoid tumor (C7B.04); secondary carcinoid tumors of distant lymph nodes (C7B.01).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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