Tenn. Code Ann. § 33-6-106: Persons not meeting admission criteria

(a) If a mandatory prescreening agent performs the initial evaluation of a person for admission and determines that the person does not meet admission criteria, the mandatory prescreening agent shall assure that the person has alternative services available and offered if appropriate. The mandatory prescreening agent shall contact the person within twelve (12) hours to determine outcome and complete follow-up as necessary. If the prescreening is performed by a physician or psychologist as authorized by § 33-6-105 , the crisis response service shall contact the person within twelve (12) hours to determine outcome and complete follow-up as necessary.

(b) Transportation to and admission of a person to a state owned or operated hospital or treatment resource shall not begin until a mandatory prescreening agent or physician or psychologist as authorized by § 33-6-105 completes a certificate of need.