As used in this chapter, the term:

(1) “Absence of a person authorized to consent” means that:

(A) After diligent efforts for a reasonable period of time, no person authorized to consent under the provisions of Code Section 31-36A-6 has been located; or

(B) All such authorized persons located have affirmatively waived their authority to consent or dissent to admission to or discharge from a health care facility or placement or transfer to an alternative health care facility or placement, provided that dissent by an authorized person to a proposed admission, discharge, or transfer shall not be deemed waiver of authority.

(1.1) “Psychiatric advance directive” means a written document voluntarily executed by an individual in accordance with the requirements of Code Section 37-11-9.

(2) “Unable to consent” means that an adult is unable to:

(A) Make rational and competent decisions regarding his or her placement options for health or personal care; or

(B) Communicate such decisions by any means.