1. An advance directive for psychiatric care executed in another state in compliance with the law of that state or of this State is valid for purposes of NRS 449A.600 to 449A.645, inclusive.
2. An instrument executed anywhere before May 26, 2017, which clearly expresses the intent of the person executing the instrument to direct the provision of psychiatric care for the person when the person is otherwise rendered incapable of communicating with his or her attending physician, if executed in a manner which attests voluntary execution and has not been subsequently revoked, is effective under NRS 449A.600 to 449A.645, inclusive.
3. As used in this section, “state” includes the District of Columbia, the Commonwealth of Puerto Rico and a territory or insular possession subject to the jurisdiction of the United States.