Many hospitals have implemented various kinds of information technologies. Using information technology can improve communication and improve patient safety. One of the information technologies is the application of bar code medication administration (BCMA). For achieving a successful implementation, a semi-formal notation form is used to model and to evaluate the effects of a BCMA system on communication-coordination-cooperation (C3) processes among nurses, physicians and pharmacists. This model could support a successful implementation of the BCMA system by identifying potential unintended and supportive effects related to C3, and providing recommendations for a better implementation. This article describes an approach for an analysis and evaluation of a planned BCMA implementation.