Tennessee Code Title 24. Evidence and Witnesses § 24-7-103

Notwithstanding another law to the contrary, a person's statement regarding the person's use or possession of marijuana to a pharmacist, physician, physician assistant, nurse, or nurse practitioner licensed under title 63 that was made in the course or scope of the person's medical care, as defined in § 56-7-2902, for the purpose of obtaining medical advice on possible adverse effects of marijuana use in combination with other medications or medical treatment is not admissible as evidence in any criminal trial, hearing, or proceeding in which the person is a defendant; provided, that the person may expressly waive this prohibition and request the statement be admitted as evidence.