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CurrentApr 1, 2026 – Sep 30, 2026

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CurrentApr 1, 2026 – Sep 30, 2026

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Chapters Disease index External causes Drugs and chemicals Neoplasms Official sources

ICD-10-CM · FY2026 · April / Chapters 10 / Chronic lower respiratory diseases (J40-J4A)

Chronic lower respiratory diseases (J40-J4A)

J40-J4A · 8 Entries

More specific codes (8)

J40Bronchitis, not specified as acute or chronicBillable / specific→J41Simple and mucopurulent chronic bronchitisCategory · further specificity required→J42Unspecified chronic bronchitisBillable / specific→J43EmphysemaCategory · further specificity required→J44Other chronic obstructive pulmonary diseaseCategory · further specificity required→J45AsthmaCategory · further specificity required→J47BronchiectasisCategory · further specificity required→J4AChronic lung allograft dysfunctionCategory · further specificity required→

Coding notesExcludes 1 · Excludes 2 · 2

Excludes 1

bronchitis due to chemicals, gases, fumes and vapors (J68.0)

Excludes 2

cystic fibrosis (E84.-)

ICD-10-CM · CDC/NCHS · English

Official ICD-10-CM titles and instructions are preserved in English. Interface translations are provided by ICD Code Hub, not CDC or WHO.

CDC / NCHS · Apr 1, 2026 – Sep 30, 2026