The Illicit Drug Reporting System (IDRS) is a national drug monitoring system intended to identify emerging trends of local and national concern in illicit drug markets, and form part of Drug Trends. This bulletin looks at self-reported contact with the criminal justice system among a sample of people who inject drugs in Greater Brisbane, Queensland, and the associations between past-year criminal justice contact, prison history, and self-reported physical and mental health, measures of psychological distress and indicators of socioeconomic disadvantage (receipt of a government pension or benefit, and unstable housing) that are also social determinants of health.