ICD-10-CM diagnosis code
J45.50 Severe persistent asthma, uncomplicated
- Billable
- Yes, a complete code (FY2026)
- Category
- J45 Asthma
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Other codes in J45
18 complete codes in this category.
- J45.30Mild persistent asthma, uncomplicated
- J45.31Mild persistent asthma with (acute) exacerbation
- J45.32Mild persistent asthma with status asthmaticus
- J45.40Moderate persistent asthma, uncomplicated
- J45.41Moderate persistent asthma with (acute) exacerbation
- J45.42Moderate persistent asthma with status asthmaticus
- J45.50Severe persistent asthma, uncomplicated
- J45.51Severe persistent asthma with (acute) exacerbation
- J45.52Severe persistent asthma with status asthmaticus
- J45.901Unspecified asthma with (acute) exacerbation
- J45.902Unspecified asthma with status asthmaticus
- J45.909Unspecified asthma, uncomplicated
Documentation tips
- Make sure the note supports every element of the title, “Severe persistent asthma, uncomplicated”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to J45.
The international WHO ICD-10 also has J45, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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