S.D. Codified Laws § 36-4-42
For the purposes of §§ 36-4-25, 36-4-26.1 and 36-4-43, a peer review committee is one or more persons acting as any committee of a state or local professional association or society, any committee of a licensed health care facility or the medical staff of a licensed health care facility, or any committee comprised of physicians within a medical care foundation, health maintenance organization, preferred provider organization, independent practice association, group medical practice, provider sponsored organization, or any other organization of physicians formed pursuant to state or federal law, that engages in peer review activity. For the purposes of this section, a peer review committee is also one or more persons acting as an administrative or medical committee, department, section, board of directors, shareholder or corporate member, or audit group, including the medical audit committee, of a licensed health care facility.
SDCL 36-4-42