C79.9 is the ICD-10 code for Secondary malignant neoplasm, unspecified site. It is a four-character subcategory of C79 (Secondary malignant neoplasm of other and unspecified sites), the most specific level in the WHO edition. It belongs to the block C76–C80 (Malignant neoplasms of ill-defined, secondary and unspecified sites) in Chapter II, Neoplasms.
- Code type
- Subcategory (4 characters)
- Chapter
- II · C00–D48
- Classification
- WHO ICD-10, 2019 version
What C79.9 includes
Conditions and terms that are coded here.
- Carcinomatosis (secondary)
- Disseminated (secondary):
- cancer NOS
- malignancy NOS
- Generalized (secondary):
- cancer NOS
- malignancy NOS
- Multiple secondary cancer NOS
- Sarcomatosis (secondary) NOS
C79.9 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
C79.9Sekundär malign tumör (metastas), ospecificerad lokalisation
C79.9Metastase med uspesifisert lokalisasjon
- C79.90Mikrometastase med uspesifisert lokalisasjon
DC799Sekundær kræftsygdom UNS
C79.9Sekundäre bösartige Neubildung nicht näher bezeichneter Lokalisation
C79.9Tumeur maligne secondaire de siège non précisé
C79.9secundair maligne neoplasma van niet-gespecificeerde lokalisatie
C79.9Secondary malignant neoplasm of unspecified site
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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