Tennessee Code Title 38. Prevention and Detection of Crime § 38-7-106

(a) A county medical examiner may perform or order an autopsy on the body of any person in a case involving a homicide, suspected homicide, a suicide, a violent, unnatural or suspicious death, an unexpected apparent natural death in an adult, sudden unexpected infant and child deaths, deaths believed to represent a threat to public health or safety, and executed prisoners. When the county medical examiner decides to order an autopsy, the county medical examiner shall notify the district attorney general and the chief medical examiner. The chief medical examiner or the district attorney general may order an autopsy in such cases on the body of a person in the absence of the county medical examiner or if the county medical examiner has not ordered an autopsy. The district attorney general may order an autopsy in such cases on the body of a person in the absence of the county medical examiner or the failure of the county medical examiner to act. The authority ordering the autopsy shall notify the next of kin about the impending autopsy if the next of kin is known or reasonably ascertainable. The sheriff or other law enforcement agency of the jurisdiction shall serve process containing such notice and return such process within twenty-four (24) hours.

(b) Notwithstanding subsection (a), if a request is received from an authorized official of a not-for-profit corporation chartered under the laws of the state, or authorized to do business in the state and certified by the Eye Bank Association of America to obtain, store and distribute donor eyes and eye tissues to be used for corneal transplants, for research and for other medical purposes, the county medical examiner may permit, at any time, the removal of the cornea or corneal tissue from the body of a deceased person in accordance with title 68, chapter 30, part 1.