Tennessee Code Title 33. Mental Health and Substance Abuse and Intellectual and Developmental Disabilities § 33-6-1009

A declaration for mental health treatment that is validly executed in another state by a nonresident of this state at the time of execution shall be given effect in this state if the declaration for mental health treatment is in compliance with either this part or the laws of the state of the service recipient's residence and the department determines that those laws are essentially as protective of the service recipient as this part.