S.C. Code Ann. § 17-5-540
The coroner or medical examiner, within twenty-four hours or one working day, whichever occurs first, must notify the Department of Child Fatalities when a child dies in the county he serves:
(2) when the death is unexpected and unexplained including, but not limited to, possible sudden infant death syndrome.
For the purposes of this section, a child is not considered to be "unattended by a physician" when a physician has, before death, provided diagnosis and treatment following a fatal injury.