HOSPITALS (SIC 806) Nongovernment establishments primarily engaged in providing general medical and surgical diagnostic and treatment services and other hospital services, as well as continuous nursing services. These establishments have an organized medical staff, inpatient beds, and equipment and facilities to provide complete health care. Establishments primarily engaged in providing diagnostic medical services and inpatient treatment for the mentally ill. Establishments known as hospitals and primarily engaged in providing health care for the mentally retarded are classified in industry 8051. Establishments primarily engaged in providing diagnostic services, treatment, and other hospital services for specialized categories of patients, except for the mentally ill.