S.D. Codified Laws § 47-23-2.1

No director, trustee, committee member, or officer serving without compensation, other than reimbursement for actual expenses, of any corporation organized under this chapter or under similar laws of another state, or any hospital organized pursuant to chapter 34-8, 34-9, or 34-10 is liable, and no cause of action may be brought, for damages resulting from the exercise of judgment or discretion in connection with the duties or responsibilities of such director, trustee, committee member, or officer while acting in an official capacity as such director, trustee, committee member, or officer, unless the act or omission involved willful or wanton misconduct. The immunity provided by this section applies to any member of an advisory board, serving without compensation, other than reimbursement for actual expenses, of any corporation described by this section.