ICD-10-CM Diagnosis Code (2025)
Official Description for J42
Unspecified chronic bronchitis
Coding Notes & Guidelines for J42
Excludes1: Not Coded Here
- 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.-)
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 dependence (Z87.891)
- occupational exposure to environmental tobacco smoke (Z57.31)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Inclusion Terms
- Chronic bronchitis NOS
- Chronic tracheitis
- Chronic tracheobronchitis
About ICD-10-CM Code J42 (Unspecified chronic bronchitis)
ICD-10-CM code J42 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM J42 became effective on October 1, 2024.
This page provides detailed information about J42 - Unspecified chronic bronchitis. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Unspecified chronic bronchitis.