S.D. Codified Laws § 29A-6-421
Unless a settlement is made with the beneficiary, a creditor or personal representative of the deceased transferor may institute an action in any court of competent jurisdiction, within six months after the death of the transferor, against the beneficiary setting forth such claim, unless the action is for recovery of medical assistance initiated by the Department of Social Services pursuant to Title 28, in which case the action must be commenced within the shorter of two years after the death of the transferor, or within six months of written notice to the Department of Social Services with information of the transferor's death, social security number, and if available upon reasonable investigation, the transferor's deceased spouse's name and social security number.
SDCL 29A-6-421