Type 1 excludesBronchitis due to chemicals, gases, fumes and vapors (J68.0)Type 2 excludesCystic fibrosis (E84.-)CodesJ40Bronchitis, not specified as acute or chronicViewJ41Simple and mucopurulent chronic bronchitisViewJ42Unspecified chronic bronchitisViewJ43EmphysemaViewJ44Other chronic obstructive pulmonary diseaseViewJ4AChronic lung allograft dysfunctionViewJ45AsthmaViewJ47BronchiectasisViewVersions2026No changes2025No changes2024New code