ICD-10 diagnosis code
C39.9 Malignant neoplasm: Ill-defined sites within the respiratory system
C39.9 is the ICD-10 code for Malignant neoplasm: Ill-defined sites within the respiratory system. It is a four-character subcategory of C39 (Malignant neoplasm of other and ill-defined sites in the respiratory system and intrathoracic organs), the most specific level in the WHO edition. It belongs to the block C30–C39 (Malignant neoplasms of respiratory and intrathoracic organs) in Chapter II, Neoplasms.
- Code type
- Subcategory (4 characters)
- Chapter
- II · C00–D48
- Classification
- WHO ICD-10, 2019 version
What C39.9 includes
Conditions and terms that are coded here.
- Respiratory tract NOS
C39.9 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
C39.9Ofullständigt angivna lokalisationer av malign tumör inom andningsorganen
C39.9Ondartet svulst med ufullstendig angitt lokalisasjon i åndedrettsorgan
DC399Kræft i åndedrætsorgan eller organ i brysthule med dårligt specificeret lokalisation
C39.9Ungenau bezeichnete Lokalisationen des Atmungssystems
C39.9Sièges mal définis de l'appareil respiratoire
C39.9slecht omschreven lokalisaties van ademhalingsstelsel
C39.9Malignant neoplasm of lower respiratory tract, part unspecified
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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