Okla. Admin. Code § 310:615-1-2
The following words and terms, when used in this Chapter, shall have the following meaning, unless the context clearly indicates otherwise.
"Ambulatory surgical center" means an establishment with an organized medical staff of physicians, with permanent facilities that are equipped and operated primarily for the purpose of performing surgical procedures, with continuous physician services available on call, and registered professional nurse services on site, whenever a patient is in the facility, which provides services or other accommodations for patients to recover for a period not to exceed twenty-three (23) hours after surgery.
"Chief executive officer" means that individual appointed by the governing body as its on-site designee who is, in fact, responsible for the conduct of all affairs of the ambulatory surgical center and who is answerable to the governing body for the day-to-day facility operation.
"Governing body" means that person, persons, or legal entity that is legally responsible for the conduct of the facility as an institution and carries out the functions, ownership, and governance.
"Grandfathered" means the status of all ambulatory surgical centers licensed at the date of publication of this Chapter.
"Hospital" means any institution, place, building, or agency, public or private, whether organized for profit or not, devoted primarily to the maintenance and operation of facilities for the diagnosis, treatment or care of patients admitted for overnight stay or longer in order to obtain medical care, surgical care, obstetrical care, or nursing care for illness, disease, injury, infirmity, or deformity. [63 O.S. 1991, §1-701(a)]
"Organized medical staff of physicians" means a group of three or more physicians organized under bylaws approved by the governing body and responsible to the governing body for the quality of all surgical care provided patients in the facility and for the ethical and professional practices of its members.
"Physician" means a person duly licensed by the Oklahoma State Board of Medical Licensure and Supervision or the Oklahoma State Board of Osteopathy to practice medicine/osteopathy and surgery.
"Registered nurse" means a person duly licensed by the Oklahoma Board of Nursing as a registered professional nurse.
"Substantial" means 50 percent or more of the area, wing or building which must comply with these standards and-the New Health Care Occupancy, NFPA 101.
"Surgical procedures" means any invasive procedure to the body, either by incision or entry into a natural body cavity, to preserve or to remove with minimal risk, diseased or injured organs, tissues, etc., but primarily restricted to the management of problems and injuries that would not require hospitalization.
"Transfer agreement" means a formally adopted mutual agreement between the ambulatory surgical center and a general hospital located no more than a twenty-minute travel distance from the ambulatory surgical center which provides for the expeditious admission of patients for whom overnight care becomes necessary.
Okla. Admin. Code § 310:615-1-2