(1) Medicaid outpatient services other than case management, individual, family, group and case management are available to all medicaid recipients who meet the following diagnostic requirements for their respective age group:

(a) persons 20 years of age or younger must have a diagnosis of substance dependency or abuse; and

(b) persons over the age of 20 must have a diagnosis of substance dependency.

(2) Outpatient chemical dependency treatment must be delivered by facilities or programs approved by the department.