This TIP, on the best practice recommendations for the treatment of substance abuse, presents guidelines for ensuring continuity of care as offenders with substance use disorders move from incarceration to the community. Research indicates that treatment gains may be lost if treatment is not continued after the offender is released from incarceration. This TIP is designed to educate and provide information for community service providers on how to meet offender treatment needs in order to overcome the obstacles to a successful transition. It details how members of a transition team can collaborate to help with the transition to the community. Since offenders generally have complex treatment needs, the TIP suggests that case management is an ideal approach. Treatment guidelines specific to populations such as offenders with mental illness, offenders with long-term medical conditions, and sex offenders are also detailed. Appendixes include: "Bibliography,""Instruments,""Resource Panel," and "Field Reviewers." (Contains 14 figures and approximately 100 resource.) (JDM)