| 0 | Not applicable (no intervention) |
| 10 | HIV prevention, testing and/or treatment |
| 11 | Viral hepatitis prevention, testing and/or treatment |
| 12 | Safe injecting/Veincare information/education |
| 13 | Sexual health information |
| 14 | Safe disposal information/education |
| 15 | Antenatal/parenting information/education |
| 16 | Physical health information/education/counselling |
| 17 | Mental health information/education/counselling |
| 18 | NSP policy information/education |
| 19 | Other information/education |
| 20 | Client complaint |
| 21 | Condom/dam provision |
| 22 | Opioid Treatment Program information/education |
| 23 | Drug treatment information/education |
| 24 | Drug information |
| 25 | Naloxone education/provision |