J42 is the ICD-10 code for Unspecified chronic bronchitis. It is a three-character category that is not subdivided further. It belongs to the block J40–J47 (Chronic lower respiratory diseases) in Chapter X, Diseases of the respiratory system.
- Code type
- Category (3 characters)
- Chapter
- X · J00–J99
- Classification
- WHO ICD-10, 2019 version
What J42 includes
Conditions and terms that are coded here.
- Chronic:
- bronchitis NOS
- tracheitis
- tracheobronchitis
What J42 excludes
Conditions that look similar but belong under another code.
J42 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
J42Uspesifisert kronisk bronkitt
DJ42Kronisk bronkitis ikke nærmere specificeret
- DJ429Kronisk bronkitis UNS
J42Määrittämätön pitkäaikainen keuhkoputkitulehdus
J42Nicht näher bezeichnete chronische Bronchitis
J42Bronchite chronique, sans précision
J42niet-gespecificeerde chronische bronchitis
J42Unspecified chronic bronchitis
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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