SDCL § 58-18A-63: Restriction on excess or secondary benefits provisions.

No plan may contain a provision that its benefits are always excess or always secondary except in accordance with the rules permitted by §§ 58-18A-53 to 58-18A-83, inclusive. No plan is required to coordinate benefits provided that it pays benefits as a primary plan; but if the plan coordinates benefits, it shall do so in compliance with the provisions of this chapter.