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ATC codes used to define ICS as well as their budesonide-equivalent conversion factor.
| ICS Class. | ATC Codes | Budesonide-Equivalent Conversion Factor |
|---|---|---|
| Budesonide | R03AK07, R03BA02 | 1 |
| Beclomethasone | R03BA01, R03AK08 | 1 (2 for ultrafine formulations) |
| Fluticasone | R03BA05, R03AK06, R03AK10, R03AK11 | 2 (10 for Fluticasonefuroate) |
| Ciclesonide | R03BA08 | 2.5 |
| Mometasone | R03BA07 | 1 |
ICS: Inhaled corticosteroid, ATC: Anatomical Therapeutic Chemical Classification System.
