Tenn. Code § 33-6-703
If, after considering the reports of the physicians and other relevant information, the chief officer determines that the person is eligible for discharge under § 33-6-602, § 33-6-705 or § 33-6-706 and that the discharge is not subject to judicial review under § 33-6-708, the chief officer shall order the immediate release of the person and notify the committing court. If one (1) or more of the physicians participating in the examination reports that the person no longer meets the standards under which the person was admitted, the person may petition the court that ordered the hospitalization for an order directing the person's release. The person shall be apprised of the results of the examination reports and shall be furnished true copies of them, which shall accompany the person's petition.
T.C.A. § 33-6-703