S.C. Code Ann. § 15-32-230
(C) The limitation on physician liability established by subsections (A) and (B) shall only apply if the patient is not medically stable and:
(2) in immediate threat of serious bodily injury.
Further, the limitation on physician liability established by subsections (A) and (B) shall only apply to care rendered prior to the patient's discharge from the emergency department or obstetrical or surgical suite.