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J45 Asthma

ICD-10-CM category J45 sits in Chapter 10 (Diseases of the respiratory system, J00-J99). It contains 18 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Subcategories

J45.2 Mild intermittent asthmaJ45.3 Mild persistent asthmaJ45.4 Moderate persistent asthmaJ45.5 Severe persistent asthmaJ45.9 Other and unspecified asthmaJ45.90 Unspecified asthmaJ45.99 Other asthma

Billable codes in J45

CodeDescription
J45.20Mild intermittent asthma, uncomplicated
J45.21Mild intermittent asthma with (acute) exacerbation
J45.22Mild intermittent asthma with status asthmaticus
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
J45.990Exercise induced bronchospasm
J45.991Cough variant asthma
J45.998Other asthma

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