(1) Except as provided in Subsections (2) and (3), an adult may adopt another adult.
(2) A married adult who is lawfully separated from the married adult's spouse may not adopt another adult without the consent of the married adult's spouse if the spouse is capable of giving consent.
(3) An individual adopting an adult may not adopt the adult unless:
(a) the individual is at least 10 years older than the adult; or
(b) at least one individual of a married couple is at least 10 years older than the adult if a married couple is adopting the adult.
(4) The placement requirements described in Part 4, Placement of a Minor Child or Vulnerable Adult for Adoption, apply to an adult adoptee that is a vulnerable adult regardless of whether the adult adoptee resides, or will reside, with the adoptive parents, unless the court waives the placement requirements upon a finding of good cause.