(a) An inpatient mental health facility may not transfer a patient who is also a person with an intellectual disability to a department mental health facility unless, before initiating the transfer, the facility administrator of the inpatient mental health facility obtains from the commissioner a determination that space is available in a department facility unit that is specifically designed to serve such a person.
(b) The department shall maintain an appropriate number of hospital-level beds for persons with an intellectual disability who are committed for court-ordered mental health services to meet the needs of the local mental health authorities. The number of beds the department maintains must be determined according to the previous year's need.