This document discusses patient classification systems (PCS). It defines PCS as a method to group patients based on their nursing care needs. The purposes of PCS include determining nursing staffing needs and workload. There are different types of PCS, including descriptive systems, checklist systems, and time-based systems. Effective PCS groups patients into categories based on factors like acuity, dependency, and time required for care. PCS are important for quality care, staff satisfaction, and monitoring standards.