S.C. Code Ann. § 44-6-1050

A grant of prior authorization for a drug is specific to the drug, rather than the actual prescription, and extends to all refills allowed pursuant to the original prescription and to subsequent prescriptions for the same drug at the same dosage provided the time allowed by the prior authorization has not expired. A Medicaid recipient who has been denied prior authorization for a prescribed drug is entitled to appeal this decision through the department's appeals process.