| Code | Description | TFR Code | TFR Description | NCA Code | NCA Description |
|---|---|---|---|---|---|
| DDA | Hypnotics & Anxiolytics | 302 | Drugs (including gases) | 7000 | Drugs |
| DDB | Drugs Used in Psychoses & Related Disorders | 302 | Drugs (including gases) | 7000 | Drugs |
| DDC | Antidepressants | 302 | Drugs (including gases) | 7000 | Drugs |
| DDD | Cns Stimulants | 302 | Drugs (including gases) | 7000 | Drugs |
| DDE | Treatment of Obesity | 302 | Drugs (including gases) | 7000 | Drugs |
| DDF | Analgesics | 302 | Drugs (including gases) | 7000 | Drugs |
| DDG | Antiepileptic | 302 | Drugs (including gases) | 7000 | Drugs |
| DDH | Parkinsonism & Related Disorders | 302 | Drugs (including gases) | 7000 | Drugs |
| DDI | Substance Dependence | 302 | Drugs (including gases) | 7000 | Drugs |
| DDJ | Dementia | 302 | Drugs (including gases) | 7000 | Drugs |