| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| N | NERVOUS SYSTEM | 神经系统 |
| N02 | ANALGESICS | 镇痛药 |
| N02A | OPIOIDS | 阿片碱类 |
| N02AB | Phenylpiperidine derivatives | 苯哌啶衍生物 |
| N02AB01 | ketobemidone | 凯托米酮（酚哌丙酮） 50 mg 口服 |
| N02AB01 | ketobemidone | 凯托米酮（酚哌丙酮） 50 mg 注射 |
| N02AB02 | pethidine | 哌替啶 0.4 g 注射 |
| N02AB02 | pethidine | 哌替啶 0.4 g 直肠给药 |
| N02AB02 | pethidine | 哌替啶 0.4 g 口服 |
| N02AB03 | fentanyl | 芬太尼 0.6 mg 舌下/口腔给药 |
| N02AB03 | fentanyl | 芬太尼 1.2 mg 经皮给药 |
| N02AB52 | pethidine, combinations excl. psycholeptics | 哌替啶，与非安定药的复方 |
| N02AB72 | pethidine, combinations with psycholeptics | 哌替啶，与安定药的复方 |