ICD-10-CM 2027
ICD-10 code for IgE asthma
From the official ICD-10-CM alphabetic index entry “IgE asthma”. Page updated September 29, 2026.
About coding IgE asthma
The ICD-10-CM code for IgE asthma is J45.909 (Unspecified asthma, uncomplicated).
Within J45.90 (unspecified asthma), J45.909 is specifically for unspecified asthma, uncomplicated. Related codes cover with (acute) exacerbation (J45.901) and with status asthmaticus (J45.902).
The conditions in its Excludes2 note aren't part of J45.909, but may be coded alongside it if the patient has both: lung diseases due to external agents (J60-J70).
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.
Common questions about IgE asthma ICD-10 codes
What is the ICD-10 code for IgE asthma?
- J45.909 — Unspecified asthma, uncomplicated.
Is J45.909 billable?
- Yes. J45.909 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J45.909 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J45.909 as a principal diagnosis.
Is J45.909 a CC or MCC?
- No. J45.909 is neither a CC nor an MCC under MS-DRG v44.0.