C79
⚠ Non-billable (Header)Secondary malignant neoplasm of other and unspecified sites
Neoplasms (C00-D49)
⚠️ This is a category header code — not billable. Use a more specific child code below.
❌ Excludes1
directCannot be coded with C79
- • secondary carcinoid tumors (C7B.-)
- • secondary neuroendocrine tumors (C7B.-)
Child Codes (10)
C79.0Secondary malignant neoplasm of kidney and renal pelvisC79.1Secondary malignant neoplasm of bladder and other and unspecified urinary organsC79.2Secondary malignant neoplasm of skinC79.3Secondary malignant neoplasm of brain and cerebral meningesC79.4Secondary malignant neoplasm of other and unspecified parts of nervous systemC79.5Secondary malignant neoplasm of bone and bone marrowC79.6Secondary malignant neoplasm of ovaryC79.7Secondary malignant neoplasm of adrenal glandC79.8Secondary malignant neoplasm of other specified sitesC79.9Secondary malignant neoplasm of unspecified site
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CodeC79
BillableNo — Header code
CategoryNeoplasms (C00-D49)
Excludes12 rule(s)
Excludes20 note(s)
Child codes10
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)