Tennessee Code Title 33. Mental Health and Substance Abuse and Intellectual and Developmental Disabilities § 33-8-105

Mental health and developmental disabilities service providers shall prepare interagency plans to assure that persons seventeen (17) years of age in state custody who will continue to need services and supports in adulthood can make a smooth transition to adult services. The plan should take into account the requirements of other state and federal laws with respect to service. If necessary to avoid delays in service during the transition into adult services, plans shall be prepared before the persons become seventeen (17) years of age.