Counts and proportions of most frequent diagnostic categories for ambulance and ED contacts postrelease among a cohort of men (n=265) who regularly injected drugs prior to imprisonment who were released from prison between September 2014 and May 2016 in Victoria, Australia
| Ambulance contacts | ED contacts | |
| (n=77*) | (n=123†) | |
| ICD-10 chapters | ||
| Injury, poisoning and certain other consequences of external causes | <5‡ | 38 (31) |
| Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified | 20 (26) | 18 (15) |
| Mental and behavioural disorders | 6 (8)§ | 30 (24) |
| Factors influencing health status and contact with health services | <5 | 10 (8) |
| Other ICD-10 chapters | 7 (9) | 21 (17) |
| No problem specified | 7 (9) | – |
| Left against advice | – | 6 (5) |
| Drug-related contacts | 32 (42) | 18 (15)¶ |
| Opioid-related contacts** | 17 (22) | 6 (5)†† |
*Total includes drug-related contacts.
†Total excludes drug-related contacts.
‡Excludes drug-related codes: T36.0–T50.9.
§Excludes drug-related codes: F10.0–F19.9.
¶ICD-10 codes: F10.0–F19.9, T36.0–T50.9.
**Subset of drug-related contacts.
††ICD-10 codes: T40.0–T40.4, T40.6, F11.0–F11.9.
ICD-10, International Statistical Classification of Disease and Related Health Problems 10th revision.