S.D. Codified Laws § 59-7-8
A physician or other health care provider as defined in subdivision 34-12C-1(5) acting in reliance on a health care decision by an attorney-in-fact or agent whom the physician or health care provider believes in good faith is authorized by this chapter to make a health care decision for the principal or a physician or other health care provider declining to act in reliance on a health care decision by an attorney-in-fact or agent whom the physician or health care provider believes in good faith is not authorized by this chapter to make a health care decision for the principal is not subject to criminal prosecution, civil liability, or professional disciplinary action on the ground that the attorney-in-fact or agent either had or did not have authority to make a health care decision or for disclosing to the attorney-in-fact or agent medical records or other information.
A physician or other health care provider who in good faith believes that the principal has or does not have decisional capacity under § 59-7-2.6 is not subject to criminal prosecution, civil liability, or professional disciplinary action for making that determination.
A physician or other health care provider who in good faith makes a determination in a writing or other record that a principal is incapacitated as defined in § 59-12-1 is not subject to criminal prosecution, civil liability, or professional disciplinary action for making that determination.
An attorney, judge, or governmental official who in good faith makes a determination in a writing or other record that a principal is incapacitated within the meaning of § 59-12-1 is not subject to criminal prosecution, civil liability, or professional disciplinary action for making that determination.
SDCL 59-7-8