The goal of this work is to present and analyze the experience that Belo Horizonte has in incorporating the technology of information in several health consultation tasks at the basic service net.  This analysis focus on the changes that happened at the organizational process of work as well as changes at the management activities of planning and monitoring the health actions, brought up by necessary reflections on developing the system. These changes played an important role in the implantation of the Family Health Program, which happened together with the process of developing the electronic medical file.

The electronic medical file, the key element to provide the user with proper assistance, clinical and administrative aspects is the guiding concept of the computerization process in the Municipal Net of Health of Belo Horizonte. As a result, the focus on the process of producing information is changed; now the focus turns to be the assistance work, which is organized according to the consul tation provided to the patient. Its target is also to turn a cultural belief based on the broken information practices into an ecological information culture, aiming the qualified results and the knowledge production.

The Net Health System implementation strengthens the assumption that the information itself is not enough; therefore it should be planned and implanted in order to try to introduce changes in the organizational behavior. In the analyzed case, the process of incorporating the technology of information was an active instrument in the viability of an assistance model centered on the family health team, joined to previous assistance projects; it also requires the patient’s total attention in different levels of the system complexity.