In this chapter, the following terms have the meanings indicated. Terms Defined. "Administration” means the Behavioral Health Administration. “Department” means the Maryland Department of Health or its designee. “Facility” means a limited private inpatient facility. “Facility service plan” means a statement of the facility’s mission, vision, scope, and purpose, as well as all specific requirements detailed under Regulation .10 of this chapter. “Individual treatment plan” means the plan prepared according to the requirements outlined in: Health-General Article, §10-706, Annotated Code of Maryland; and COMAR 10.21.03. “Joint Commission” means a voluntary national healthcare accreditation service recognized for Medicare certification purposes by Public Law 89-97 and for Maryland State licensure purposes by Health-General Article, §19-2302, Annotated Code of Maryland. “License” means a license issued by the Department to operate a limited private inpatient facility in this State. “Licensed nurse” means a practical nurse or registered nurse licensed by the Board of Nursing under the provisions of Health Occupations Article, Title 8, Annotated Code of Maryland. Limited Private Inpatient Facility. “Limited private inpatient facility” means a private inpatient treatment facility that provides mental health evaluation and treatment to adults 24 hours per day. “Limited private inpatient facility” does not include: A facility licensed to provide mental health services under authority of a statute other than Health-General Article, §§10-501—10-511, Annotated Code of Maryland; or A facility that bills for reimbursement under the Medical Assistance Program. “Mental health professional” means an individual who is licensed, certified, or otherwise legally authorized to provide the mental health service: Under Health Occupations Article, Annotated Code of Maryland; or In the state where the service is rendered. “Secretary” means the Secretary of Health. Usable Square Feet. “Usable square feet” means physical space that is available for resident use. “Usable square feet” does not include: Service areas; Administrative offices; Entrance ways including the space where a door swings open; Closets, lockers, and wardrobes; Spaces where ceiling heights are less than acceptable for habitable space, as defined by the applicable local building code; or Corridors.