| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| V | VARIOUS | 杂类 |
| V09 | DIAGNOSTIC RADIOPHARMACEUTICALS | 诊断用放射性药物 |
| V09E | RESPIRATORY SYSTEM | 呼吸系统 |
| V09EX | Other respiratory system diagnostic radiopharmaceuticals | 其它呼吸系统诊断用放射性药物 |
| V09EX01 | krypton (81mKr) gas | 氪气(81mKr) |