S.C. Code Regs. § § 61-91.600.608
In instances when there have been no patients in a facility for any reason, for a period of 90 days or more, the facility shall notify the Department in writing no later than the 100th day following the date of the last procedure/surgery performed. At the time of that notification, the Department shall consider, upon appropriate review of the situation, the necessity of inspecting the facility prior to any new and/or re-admissions to the facility. The facility shall still apply and pay the licensing fee to keep the license active despite being at zero census or temporarily closed. If the facility has no patients for a period longer than one year, and there is a desire to re-open, the facility shall re-apply to the Department and shall be subject to all licensing requirements at the time of that application, including construction-related requirements for a new facility.
S.C. Code Regs. § 61-91.600.608