(a) Except as otherwise provided in this Part, a minor may be admitted to a facility if the minor is mentally ill or a substance abuser and in need of treatment. Except as otherwise provided in this Part, the provisions of G.S. 122C-211 shall apply to admissions of minors under this Part. Except as provided in G.S. 90-21.5, in applying for admission to a facility, in consenting to medical treatment when consent is required, and in any other legal procedure under this Article, the legally responsible person shall act for the minor. The application of the minor shall be in writing and signed by the legally responsible person. If a minor reaches the age of 18 while in treatment under this Part, further treatment is authorized only on the written authorization of the client or under the provisions of Part 7 or Part 8 of Article 5 of this Chapter.
(b) The Commission shall adopt rules governing procedures for admission to 24-hour facilities not falling within the category of facilities where freedom of movement is restricted. These rules shall be designed to ensure that no minor is improperly admitted to or improperly remains in a 24-hour facility.