ICD-10-CM · Chapter 10 · J00-J99
J45 Asthma
Includes
- allergic (predominantly) asthma
- allergic bronchitis NOS
- allergic rhinitis with asthma
- atopic asthma
- extrinsic allergic asthma
- hay fever with asthma
- idiosyncratic asthma
- intrinsic nonallergic asthma
- nonallergic asthma
Excludes 1 (cannot be coded together)
- detergent asthma (J69.8)
- miner's asthma (J60)
- wheezing NOS (R06.2)
- wood asthma (J67.8)
Excludes 2 (not included here)
- asthma with chronic obstructive pulmonary disease (J44.89)
- chronic asthmatic (obstructive) bronchitis (J44.89)
- chronic obstructive asthma (J44.89)
- other specified chronic obstructive pulmonary disease (J44.89)
Use Additional Code
- 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)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| J45..2 | Mild intermittent asthma | No |
| J45..20 | Mild intermittent asthma, uncomplicated | Yes |
| J45..21 | Mild intermittent asthma with (acute) exacerbation | Yes |
| J45..22 | Mild intermittent asthma with status asthmaticus | Yes |
| J45..3 | Mild persistent asthma | No |
| J45..30 | Mild persistent asthma, uncomplicated | Yes |
| J45..31 | Mild persistent asthma with (acute) exacerbation | Yes |
| J45..32 | Mild persistent asthma with status asthmaticus | Yes |
| J45..4 | Moderate persistent asthma | No |
| J45..40 | Moderate persistent asthma, uncomplicated | Yes |
| J45..41 | Moderate persistent asthma with (acute) exacerbation | Yes |
| J45..42 | Moderate persistent asthma with status asthmaticus | Yes |
| J45..5 | Severe persistent asthma | No |
| J45..50 | Severe persistent asthma, uncomplicated | Yes |
| J45..51 | Severe persistent asthma with (acute) exacerbation | Yes |
| J45..52 | Severe persistent asthma with status asthmaticus | Yes |
| J45..9 | Other and unspecified asthma | No |
| J45..90 | Unspecified asthma | No |
| J45..901 | Unspecified asthma with (acute) exacerbation | Yes |
| J45..902 | Unspecified asthma with status asthmaticus | Yes |
| J45..909 | Unspecified asthma, uncomplicated | Yes |
| J45..99 | Other asthma | No |
| J45..990 | Exercise induced bronchospasm | Yes |
| J45..991 | Cough variant asthma | Yes |
| J45..998 | Other asthma | Yes |
Plain-language terms for this code
The following entries in the US Medical Glossary correspond to ICD-10-CM category J45:
- Asthma — Asma
- Pediatric Asthma — Asma pediátrica
Last reviewed: September 2026