N.Y. Comp. Codes R. & Regs. tit. 14, § 551.12
(b) No application for the issuance of an operating certificate of a psychiatric inpatient unit of a hospital licensed pursuant to article 28 of the Public Health Law, which is applying for an operating certificate pursuant to Part 580 of this Title, shall be granted unless the applicant hospital is, or will be, approved to admit individuals in emergencies pursuant to section 9.39 of the Mental Hygiene Law, except as or provided pursuant to the authority granted in section 31.04(a)(4) of the Mental Hygiene Law and as outlined below.
(1) The commissioner shall waive this requirement for a period of two years upon determination that:
(i) there is no public need for additional beds for emergency psychiatric admission in the service area. In determining such need, the factors which the commissioner shall consider include, but shall not be limited to:
(iv) the hospital has agreed to accept referrals of involuntary psychiatric patients under an emergency admissions system which has been approved by the commissioner. In determining whether such a proposed system should be approved, the commissioner, in consultation with the local governmental unit, shall consider whether such proposal:
(c) In reviewing projects for inpatient beds, the Office of Mental Health shall consider:
(4) for projects serving children and adolescents: