Tennessee Code Title 49. Education § 49-10-702

(a) The state shall establish and implement a statewide early intervention system to ensure that all infants and toddlers in the state, from birth through two (2) years of age, inclusive, with disabilities who may have a developmental delay or a diagnosed disability are identified and evaluated.

(b) The early intervention system established under subsection (a) shall be a system of coordinated, comprehensive, and multidisciplinary interagency programs for infants and toddlers with developmental delays or disabilities and their families and must include all components prescribed by the IDEA.