N.M. Stat. § 38-4-14
Incapacitated person; definition.
As used in the Probate Code [Chapter 45 NMSA 1978] the term "incapacitated
person" means any person who demonstrates over time either partial or complete
functional impairment by reason of mental illness, mental deficiency, physical illness or
disability, chronic use of drugs, chronic intoxication or other cause, except minority, to
the extent that he is unable to manage his personal care or he is unable to manage his
property and financial affairs.