J42 is a billable/specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Unspecified chronic bronchitis.
Inclusion term
Chronic bronchitis NOS
Chronic tracheitis
Chronic tracheobronchitis
Use additional code
Type 1 excludes
Versions
2025
No changes
2024
Code changed
Type 1 excludes
chronic asthmatic bronchitis (J44.-)chronic bronchitis with airways obstruction (J44.-)chronic emphysematous bronchitis (J44.-)chronic obstructive pulmonary disease NOS (J44.9)simple and mucopurulent chronic bronchitis (J41.-)
- bronchiolitis obliterans and bronchiolitis obliterans syndrome (J44.81)
- chronic asthmatic bronchitis (J44.-)
- chronic bronchitis with airways obstruction (J44.-)
- chronic emphysematous bronchitis (J44.-)
- chronic obstructive pulmonary disease NOS (J44.9)
- simple and mucopurulent chronic bronchitis (J41.-)
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
Code changed
Use additional code
code to identify:exposure to environmental tobacco smoke (Z77.22)exposure to tobacco smoke in the perinatal period (P96.81)history of tobacco use (Z87.891)occupational exposure to environmental tobacco smoke (Z57.31)tobacco dependence (F17.-)tobacco use (Z72.0)
- code to identify:
- exposure to environmental tobacco smoke (Z77.22)
- exposure to tobacco smoke in the perinatal period (P96.81)
- history of tobacco dependence (Z87.891)
- occupational exposure to environmental tobacco smoke (Z57.31)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
2016
New code