The Telenurse project, financed by the European Union, aims to show the effectiveness of the application of the International Classification of Nursing Practice (ICNP) in practice. To this aim, the ICNP will be applied in three test sites in Europe. In the Netherlands, a pilot application of the ICNP is carried out at the VU Hospital in Amsterdam. The target of this pilot is to gain insight into the patient-related care activities of nurses, with the primary aim to provide the hospital management adequate information for managing nursing care. To this aim a subset of the ICNP is selected (the NMDS). The starting point is that data collection should not require an extra effort of nurses. The ICNP-based NMDS will therefore be collected by the nursing information system that is used by the hospital: the VISION system. VISION is a nursing information system which is integrated in the HISCOM Hospital Information System.