The aim of a nursing data set is to provide useful information for assessing the level of care and the state of health of the population. Currently, both in Italy and in other countries, this data is incomplete due to the lack of a structured nursing documentation , making it indispensible to develop a Nursing Minimum Data Set (NMDS) using standard nursing language to evaluate care, costs and health requirements. The aim of the project described , is to create a computer system using standard nursing terms with a dedicated software which will aid the decision-making process and provide the relative documentation. This will make it possible to monitor nursing activity and costs and their impact on patients' health : adequate training and involvement of nursing staff will play a fundamental role.