| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| V | VARIOUS | 杂类 |
| V03 | ALL OTHER THERAPEUTIC PRODUCTS | 其它各种治疗用药品 |
| V03A | ALL OTHER THERAPEUTIC PRODUCTS | 其它各种治疗用药品 |
| V03AN | Medical gases | 医用气体 |
| V03AN01 | oxygen | 氧气 |
| V03AN02 | carbon dioxide | 二氧化碳 |
| V03AN03 | helium | 氦 |
| V03AN04 | nitrogen | 氮 |
| V03AN05 | medical air | 医用空气 |