“…The ICD-10 diagnostic codes used in the Australian Institute of Health and Welfare's definition of a mental-health related hospital separation were used to identify mental health related diagnostic events (45). Diagnostic codes were grouped into eight variables according to the DSM-5 classification of mental disorders (46). Variables were created for: neurodevelopmental disorders (F70, F79-F84, F88-F95, F98.0), psychotic disorders (F20-F25, F28, F29), mood disorders (F30, F31.0, F31.1-F31.9, F32-F34, F38, F39), stress and anxiety disorders (F40, F41, F43.0, F43.1, F43.20-F43.22, F43.28, F43.8, F43.9, F48), impulse control disorders (F63, F90-F92), personality disorders (F60-F63, F68, F69), drug or alcohol related mental disorders (F10-F15, F19), and eating disorders (F50).…”