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J45.90

⚠ Non-billable (Header)

Unspecified asthma

Diseases of the respiratory system (J00-J99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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Also Known As

Asthmatic bronchitis NOSChildhood asthma NOSLate onset asthma
✅ No additional coding notes for J45.90

Child Codes (3)

J45.901Unspecified asthma with (acute) exacerbationJ45.902Unspecified asthma with status asthmaticusJ45.909Unspecified asthma, uncomplicated

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Code Information

CodeJ45.90
BillableNo — Header code
ParentJ45.9
CategoryDiseases of the respiratory system (J00-J99)
Excludes10 rule(s)
Excludes20 note(s)
Child codes3

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)