Alaska Stat. § 13.52.030
(b) Subject to AS 13.52.055(b), a surrogate may make a decision regarding mental health treatment for a patient who is an adult if
(3) the patient has been determined to lack capacity by
(c) Except as provided for anatomical gifts in AS 13.52.173, an adult may designate an individual to act as surrogate for that adult by personally informing the supervising health care provider. Except as provided by AS 13.52.173 or 13.52.193, in the absence of a designation, or if the designee is not reasonably available, a member of the following classes of the patient's family who is reasonably available, in descending order of priority, may act as surrogate: