Minn. R. Civ. P. 35.03 (2026)

If at any stage of an action a party voluntarily places in controversy the physical, mental, or blood condition of that party, a decedent, or a person under that party's control, such party thereby waives any privilege that party may have in that action regarding the testimony of every person who has examined or may thereafter examine that party or the person under that party's control with respect to the same physical, mental, or blood condition.