S.C. Code Ann. § 38-73-420: Insurance subject to both this article and Article 3.

If any kind of insurance, subdivision, or combination thereof or type of coverage subject to this article is also subject to regulation under Article 3 of this chapter, an insurer to which both articles are otherwise applicable shall file with the department a designation as to which regulatory article shall be applicable to it with respect to that kind of insurance, subdivision, or combination thereof or type of coverage.