Tenn. Code Ann. § 41-21-222

The department of mental health and substance abuse services, as soon as it is properly staffed and equipped to examine all persons eligible for release or about to be paroled from the penal institutions of the state, upon the request of the commissioner of correction, shall examine all such persons with the view of determining whether the persons are mentally ill or have symptoms of mental illness and report its findings to the commissioner of correction.