S.C. Code Ann. § 42-17-60

The award of the commission, as provided in Section 42-17-40, if not reviewed in due time, or an award of the commission upon the review, as provided in Section 42-17-50, is conclusive and binding as to all questions of fact. However, either party to the dispute, within thirty days from the date of the award or within thirty days after receipt of notice to be sent by registered mail of the award, but not after, whichever is the longest, may appeal from the decision of the commission to the court of appeals. Notice of appeal must state the grounds of the appeal or the alleged errors of law. In case of an appeal from the decision of the commission on questions of law, the appeal does not operate as a supersedeas and, after that time, the employer is required to make weekly payments of compensation and to provide medical treatment ordered by the commission involved in the appeal or certification until the questions at issue have been fully determined in accordance with the provisions of this title. Interest accrues on an unpaid portion of the award at the legal rate of interest as established in Section 34-31-20(B) during the pendency of an appeal.