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

What this means — in plain language

MedlinePlus · NIH

What is cancer? Cancer is not just one disease but many diseases. Cancer begins in your cells, which are the building blocks of your body. Usually, your body forms new cells as needed, replacing old cells that die. Sometimes this process goes wrong. New cells grow even when you don't need them, and old cells don't die when they should. These extra cells can form a mass called a tumor. Tumors can be benign or…

Read more about Cancer at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

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)

Medications indicated for this condition

FDA labeling

Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.

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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