J45.9
⚠ Non-billable (Header)Other and unspecified asthma
Diseases of the respiratory system (J00-J99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
❌ Excludes1
inherited from J45Rules from parent category J45: Asthma
- • detergent asthma (J69.8)
- • miner's asthma (J60)
- • wheezing NOS (R06.2)
- • wood asthma (J67.8)
⚠️ Excludes2
inherited from J45Rules from parent category J45: Asthma
- • asthma with chronic obstructive pulmonary disease (J44.89)
- • chronic asthmatic (obstructive) bronchitis (J44.89)
- • chronic obstructive asthma (J44.89)
- • other specified chronic obstructive pulmonary disease (J44.89)
📋 Code Instructions
from J45- • 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)
- • tobacco dependence (F17.-)
- • tobacco use (Z72.0)
Child Codes (2)
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Add J45.9 to the Excludes Checker to validate against your full code list.
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CodeJ45.9
BillableNo — Header code
ParentJ45
CategoryDiseases of the respiratory system (J00-J99)
Excludes14 rule(s)
Excludes24 note(s)
Child codes2
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)