This document discusses Building Information Modeling (BIM) with a focus on healthcare applications. It provides an overview of BIM, describing it as a 3D model-based collaboration process. The document outlines key drivers for BIM adoption like government policies, lean construction principles, and sustainability goals. Benefits of BIM include improved coordination, clashed detection and reduced waste. A case study highlights how BIM supported coordination of complex systems in the expansion of Crumlin Hospital. The document concludes with advice for new BIM users and potential future developments like scanning existing buildings.