California Code, Health and Safety Code - HSC § 129730

(a) Space for the following functions shall be considered “outpatient clinical services,” when provided in a freestanding building that is separated from a hospital building where inpatient hospital services are provided: administrative space; central sterile supply; storage; morgue and autopsy facilities; employee dressing rooms and lockers; janitorial and housekeeping facilities; and laundry.

(b) The outpatient portions of the following services may also be delivered in a freestanding building and shall be considered “outpatient clinical services:” surgical; chronic dialysis; psychiatry; rehabilitation; occupational therapy; physical therapy; maternity; dentistry; and chemical dependency.

(c) Services that duplicate basic services, as defined in subdivision (a) of Section 1250, or services that are provided as part of a basic service, but are not required for facility licensure may also be provided in a freestanding building.

(d) The department shall not approve any plans that propose to locate any function listed in subdivision (a) in a freestanding building until the State Department of Health Services certifies to the department that it has received and approved a plan acceptable to the State Department of Health Services that demonstrates how the health facility will continue to provide all basic services in the event of any emergency when the freestanding building may no longer remain functional.

(e) Services listed in subdivisions (b) and (c) are subject to the same 25-percent inpatient limitation described in Section 129725.