N.Y. Comp. Codes R. & Regs. tit. 10, § 405.32
(5) Patients may be assigned to observation services only through the emergency department or by direct referral in accordance with hospital policies, procedures and bylaws, in conformance with applicable statutes and regulations.
(b) Organization and notice.
(1) The medical staff shall develop and implement written policies and procedures, approved by the governing body, that are based on the clinical needs of the patient, that shall specify:
(4) Patients being assigned to the observation services, or the patient representative, shall be provided with an oral and written notice within 24 hours of such placement that the patient is not admitted to the hospital and is under observation status. The hospital shall make a good faith effort to obtain written acknowledgment of receipt of the notice by the patient or the patient representative, and if not obtained, document its good faith efforts to obtain such acknowledgment and the reason why the acknowledgment was not obtained. Such written notice shall include, but not be limited to the following information:
(ii) that the patient should contact his or her insurance plan to better understand the implications of being placed in observation status.
(c) Locations.
Hospitals may provide observation services in the following locations:
(3) in a hospital designated as a critical access hospital pursuant to subpart F of part 485 of title 42 of the Code of Federal Regulations or a sole community hospital pursuant to section 412.92 of title 42 of the Code of Federal Regulations, or any successor provisions, observation services may be provided in the emergency department.
(d) Distinct observation units.
(1) Physical standards:
(2) Any hospital seeking to establish a distinct observation unit shall, not less than 90 days prior:
(ii) if construction, as defined in subdivision 5 of section 2801 of the Public Health Law, will be needed, or construction waivers are being requested, or a service will be eliminated:
(a) General.