Intensive outpatient program
An intensive outpatient program (IOP), also known as an intensive outpatient treatment (IOT) program, is a structured non-residential psychological treatment program that addresses mental health disorders and substance use disorders (SUDs) that do not require detoxification through a combination of group-based psychotherapy, individual psychotherapy, family counseling, educational groups, and strategies for encouraging motivation and engagement in treatment. IOP operates on a small scale and does not require the intensive residential or partial day services typically offered by larger, more comprehensive treatment facilities.
Source: Wikipedia — Intensive outpatient program (CC BY-SA 4.0)