Get started free

C79

Non-billable

Secondary malignant neoplasm of other and unspecified sites

C79 is the ICD-10-CM code for Secondary malignant neoplasm of other and unspecified sites. It is a non-billable category code — use a more specific child code such as C79.0 for billing.

Status
Header (non-billable)
Chapter
C00-D49
Subcodes
10
Edition
FY2026

C00-D49 Neoplasms

Excludes1 — not coded here

  • •secondary carcinoid tumors (C7B.-)
  • •secondary neuroendocrine tumors (C7B.-)

Frequently asked questions

What is ICD-10 code C79?
C79 is the ICD-10-CM code for "Secondary malignant neoplasm of other and unspecified sites". It falls under C00-D49 Neoplasms.
Is C79 a billable code?
No — C79 is a non-billable header code. Use a more specific child code (such as C79.0) for billing.
What are the subcodes of C79?
C79 has 10 more specific child codes, including C79.0, C79.1, C79.2.
What is excluded from C79?
Excludes1 (not coded here): secondary carcinoid tumors (C7B.-); secondary neuroendocrine tumors (C7B.-).

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

Look up another ICD-10 code or condition

Powered by Eleplan

Free ICD-10 lookup is just the start. Eleplan keeps the whole care plan in one place.

Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, with Ellie, your AI care assistant, on top of it. Free to start.

Get started freeSee how Eleplan works →