S.C. Code Ann. § 38-71-1980
(A)
(1) Within fifteen days after the date of receipt of a notice of an adverse determination or final adverse determination pursuant to Section 38-71-1940, a covered person or his authorized representative may file a request for an expedited external review with the health carrier at the time the covered person receives:
(b) a final adverse determination if:
(2) If the denial of coverage is based on a determination that the health care service or treatment recommended or requested is experimental or investigational, the request for review must include a certification from the covered person's treating physician who must be a licensed physician qualified to practice in the area of medicine appropriate to treat the covered person's condition that:
(b) at least one of the following situations is applicable:
(B)
(1) At the time the health carrier receives a request for an expedited external review, the health carrier or its designee as expeditiously as reasonably possible shall:
(3)
(C)
(2) If the denial of coverage is based on a determination that the health care service or treatment recommended or requested is experimental or investigational,
(a) the independent review organization shall:
(b)
(c) Each member of the clinical peer review panel shall provide an opinion to the independent review organization on whether to uphold or reverse the adverse determination or the final adverse determination. Each clinical peer reviewer's opinion shall include a description:
(D) In addition to the documents and information provided or transmitted pursuant to this section, the independent review organization, to the extent the information or documents are available and the independent review organization considers them appropriate, shall consider the following in reaching a decision:
(6) if adverse determination or final adverse determination involves a denial of coverage based on a determination that the health care service or treatment recommended or requested is experimental or investigational, whether:
(E)
(4)
(F)
(1) As expeditiously as reasonably possible, but in no event more than three business days after the date of receipt of the request for an expedited external review by the health carrier, the independent review organization shall provide notice of its decision to uphold or reverse the adverse determination or the final adverse determination to the:
(3) If the notice provided pursuant to subsection (F)(1) was not in writing, within two days after the date of providing that notice, the independent review organization shall: