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  3. Ch. J00-J99
  4. Sec. J40-J4A
  5. Category J45
Category J45

Asthma

Clinical Classification Guidelines

Specific Diagnosis Codes

Mild intermittent asthma
J45.2
Mild intermittent asthma, uncomplicated
J45.20
Mild intermittent asthma with (acute) exacerbation
J45.21
Mild intermittent asthma with status asthmaticus
J45.22
Mild persistent asthma
J45.3
Mild persistent asthma, uncomplicated
J45.30
Mild persistent asthma with (acute) exacerbation
J45.31
Mild persistent asthma with status asthmaticus
J45.32
Moderate persistent asthma
J45.4
Moderate persistent asthma, uncomplicated
J45.40
Moderate persistent asthma with (acute) exacerbation
J45.41
Moderate persistent asthma with status asthmaticus
J45.42
Severe persistent asthma
J45.5
Severe persistent asthma, uncomplicated
J45.50
Severe persistent asthma with (acute) exacerbation
J45.51
Severe persistent asthma with status asthmaticus
J45.52
Other and unspecified asthma
J45.9
Unspecified asthma
J45.90
Unspecified asthma with (acute) exacerbation
J45.901
Unspecified asthma with status asthmaticus
J45.902
Unspecified asthma, uncomplicated
J45.909
Other asthma
J45.99
Exercise induced bronchospasm
J45.990
Cough variant asthma
J45.991
Other asthma
J45.998
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Data updated for October 2025 release.

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