(a) The chief medical officer of a mental health facility, subject to the availability of suitable accommodations and to the rules promulgated by the board of health, shall admit for diagnosis, care and treatment any individual:

1. (1) Eighteen years of age or older who is mentally ill, intellectually disabled or addicted or who has manifested symptoms of mental illness, intellectual disability or addiction and who makes application for hospitalization; or

2. (2) Under eighteen years of age who is mentally ill, intellectually disabled or addicted or who has manifested symptoms of mental illness, intellectual disability or addiction and where there is an application for hospitalization, either made in person at the time of admission or by a notarized written application submitted by facsimile, e-mail or in person prior to, or at the time of, admission, on his or her behalf as follows:

   1. (A) By the parents of such person;
   2. (B) If only one parent is living, then by such parent;
   3. (C) If the parents are living separate and apart, then by the parent who has the custody of such person; or
   4. (D) If there is a guardian who has legal custody of such person, then by such guardian.
   5. (E) If the subject person under eighteen years of age is an emancipated minor, the admission of that person as a voluntary patient shall be conditioned upon the consent of the patient.
   6. (F) If the application for the subject person under eighteen years of age does not satisfy one of paragraphs (A) through (E) of this subdivision, the provisions of article five of this chapter shall be followed with respect to any hospitalization.