(a) The department shall establish rules pursuant to chapter 91 to permit payment to providers of group therapy services to recipients under this chapter.
(b) For the purposes of this section, "group therapy" shall be defined as psychotherapeutic treatment delivery in which a patient receives treatment as a member of a group of patients receiving similar treatment, involving interaction both between the patient and the practitioner and among patients, and which is supervised by a practitioner licensed under chapters 453 or 465.