The following terms have the meanings indicated. Terms Defined. “Administration” means the Mental Hygiene Administration. “Attorney” means a person licensed to practice law or the attorney's agent. “Clergy” means an official of a recognized church, religious society, or congregation of any sect, order, or denomination. “Disorderly manner” means conduct as defined by Criminal Law Article, §10-202, Annotated Code of Maryland. “Drugs” means any medically unauthorized substance as defined by Criminal Law Article, §5-101(f), Annotated Code of Maryland. “Facility” means any public or private hospital, clinic, or other institution that provides or purports to provide treatment or other services for a mental disorder, except an acute care general hospital that does not have a separately identified inpatient psychiatric service. “Patient” means any individual receiving care and treatment in a facility. “Physician” means an individual who is authorized to practice medicine under Health Occupations Article, Title 14, Annotated Code of Maryland. “Professional staff” means any clinical staff who is either licensed or certified in a health care field or clinical staff in charge of a residential area. “Visitor” means a person who is coming to see a patient and is not acting as an agent of the facility or the Maryland Department of Health.