This document discusses the application of Activity-Based Costing (ABC) in hospital management. It provides an overview of past studies that have implemented ABC in various hospital departments and services. However, most applications of ABC in hospitals have been narrow in scope, focusing on just one department rather than hospital-wide implementation. The document argues that while ABC can provide benefits, applying it to an entire hospital brings challenges related to the complexity of the system and differences between hospital activities, products and costs. Overall implementation of ABC across a full hospital requires careful planning to address these challenges.