| J45 | Asthma | NON-BILLABLE CODE |
| J45.2 | Mild intermittent asthma | NON-BILLABLE CODE |
| J45.21 | Mild intermittent asthma with (acute) exacerbation | BILLABLE CODE |
| J45.22 | Mild intermittent asthma with status asthmaticus | BILLABLE CODE |
| J45.3 | Mild persistent asthma | NON-BILLABLE CODE |
| J45.30 | Mild persistent asthma, uncomplicated | BILLABLE CODE |
| J45.31 | Mild persistent asthma with (acute) exacerbation | BILLABLE CODE |
| J45.32 | Mild persistent asthma with status asthmaticus | BILLABLE CODE |
| J45.4 | Moderate persistent asthma | NON-BILLABLE CODE |
| J45.40 | Moderate persistent asthma, uncomplicated | BILLABLE CODE |
| J45.41 | Moderate persistent asthma with (acute) exacerbation | BILLABLE CODE |
| J45.42 | Moderate persistent asthma with status asthmaticus | BILLABLE CODE |
| J45.5 | Severe persistent asthma | NON-BILLABLE CODE |
| J45.50 | Severe persistent asthma, uncomplicated | BILLABLE CODE |
| J45.51 | Severe persistent asthma with (acute) exacerbation | BILLABLE CODE |
| J45.52 | Severe persistent asthma with status asthmaticus | BILLABLE CODE |
| J45.9 | Other and unspecified asthma | NON-BILLABLE CODE |
| J45.90 | Unspecified asthma | NON-BILLABLE CODE |
| J45.901 | Unspecified asthma with (acute) exacerbation | BILLABLE CODE |
| J45.902 | Unspecified asthma with status asthmaticus | BILLABLE CODE |
| J45.909 | Unspecified asthma, uncomplicated | BILLABLE CODE |
| J45.99 | Other asthma | NON-BILLABLE CODE |
| J45.990 | Exercise induced bronchospasm | BILLABLE CODE |
| J45.991 | Cough variant asthma | BILLABLE CODE |
| J45.998 | Other asthma | BILLABLE CODE |
