This document outlines the key aspects of an outpatient department (OPD) in a hospital. It defines an OPD as the area of a hospital designed to treat outpatients without requiring overnight admission. The document describes the various services an OPD provides, including clinical examinations, diagnostic tests, minor procedures, and counseling. It also discusses OPD design considerations, such as patient flow, space requirements for examination rooms and ancillary facilities, and the roles and responsibilities of OPD administrators in ensuring quality of care.