Miss. Code Ann. § 41-41-223: Miss. Code Ann. § 41-41-223

(1) Sections 41-41-201 through 41-41-229 do not affect the right of an individual to make health-care decisions while having capacity to do so.

(2) An individual is presumed to have capacity to make a health-care decision, to give or revoke an advance health-care directive, and to designate or disqualify a surrogate.