ICD-10-CM 2027
ICD-10 code for Asthmatic bronchitis
From the official ICD-10-CM alphabetic index entry “Bronchitis (diffuse) (fibrinous) (hypostatic) (infective) (membranous) › asthmatic”. Page updated September 29, 2026.
About coding Asthmatic bronchitis
The ICD-10-CM code for Asthmatic bronchitis is J45.9 (Other and unspecified asthma). The official index lists 3 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on J45.9.
Within J45, choose J45.9 (Other and unspecified asthma) only when documentation doesn't support a more specific option: mild intermittent asthma (J45.2), mild persistent asthma (J45.3), moderate persistent asthma (J45.4) and severe persistent asthma (J45.5).
To report this condition, pick the subcode that matches the documentation: J45.90 (asthma) and J45.99 (asthma).
Use an additional code to identify: eosinophilic asthma (J82.83), 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) and 2 more.
More specific Asthmatic bronchitis codes (official index)
Common questions about Asthmatic bronchitis ICD-10 codes
What is the ICD-10 code for Asthmatic bronchitis?
- J45.9 — Other and unspecified asthma (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: J44.89, J44.0, J44.1.
What is the ICD-10 code for chronic asthmatic bronchitis?
- J44.89 — Other specified chronic obstructive pulmonary disease.
Is J45.9 billable?
- No. J45.9 is a header code. Report one of its more specific subcodes instead.