Module Description: There is an over-representation of individuals with substance use disorders in the criminal justice system. This can be true for individuals with opioid use disorders in need of MAT. Healthcare practitioners treating justice-involved patients may have limited information about how the criminal justice system is constructed and how best to help their patients who are at risk for disruption in care and treatment due to arrest, court oversight and incarceration. This information can be helpful given challenges when MAT becomes difficult to access due to the constraints of the justice system. Although the justice system is becoming more aware of the importance of MAT, it is important also for healthcare providers to have awareness of the justice system to best help support their patients. This educational activity provides an overview and basic information about the criminal justice system from arrest to incarceration to re-entry.