Ohio Rev. Code Ann. § 5167.03
As part of the medicaid program, the department of medicaid shall establish a care management system. The department shall implement the system in some or all counties. The department shall designate the medicaid recipients who are required or permitted to participate in the system. Those who shall be required to participate in the system include medicaid recipients who receive cognitive behavioral therapy as described in division (A)(2) of section 5167.16 of the Revised Code. Except as provided in section 5166.406 of the Revised Code, no medicaid recipient participating in the healthy Ohio program established under section 5166.40 of the Revised Code shall participate in the care management system. The department may require or permit participants to obtain health care services from providers designated by the department. The department may require or permit participants to obtain health care services through medicaid managed care organizations.