eligible prisoner
(5) Definitions .— As used in this subsection— (A) the term “residential substance abuse treatment” means a course of individual and group activities and treatment, lasting at least 6 months, in residential treatment facilities set apart from the general prison population (which may include the use of pharmocotherapies, where appropriate, that may extend beyond the 6-month period); (B) the term “eligible prisoner” means a prisoner who is— (i) determined by the Bureau of Prisons to have a substance abuse problem; and (ii) willing to participate in a residential substance abuse treatment program; and (C) the term “aftercare” means placement, case management and monitoring of the participant in a community-based substance abuse treatment program when the participant leaves the custody of the Bureau of Prisons.