Tennessee Code Title 33. Mental Health and Substance Abuse and Intellectual and Developmental Disabilities § 33-3-218

(1)(A) a service recipient, due to intellectual disability or mental impairment related to a developmental disability, is unable to make an informed decision about application for admission to a developmental center under § 33-5-301, request discharge under § 33-5-303, or a routine medical, dental, or mental health treatment, OR

(B) a service recipient, due to a diagnosed mental illness or serious emotional disorder, is unable to make an informed decision about application to a hospital or inpatient treatment resource under § 33-6-201, requesting discharge under § 33-6-206, inpatient mental health treatment, release of information, or getting information, AND