| ICD-9 Code | Description | Category |
| 305.50 | Opioid abuse, unspecified | 305 Nondependent abuse of drugs |
| 305.51 | Opioid abuse, continuous | 305 Nondependent abuse of drugs |
| 305.52 | Opioid abuse, episodic | 305 Nondependent abuse of drugs |
| 305.53 | Opioid abuse, in remission | 305 Nondependent abuse of drugs |
