The American Society of Addiction Medicine Patient Placement Criteria 2R (ASAM PPC-2R) is the most widely used and comprehensive set of guidelines for placement, continued stay and discharge of patients with addiction disorders. The ASAM PPC-2R is officially required in over 30 states and provides the addiction field with the nomenclature for describing the continuum of addiction services. The language is consistent with the American Psychiatric Associations Diagnostic and Statistical Manual of Mental Disorders (DSM-IV).