The Unified Health System (SUS) is developed with care divided into aspects of care, so it provides a comprehensive service to the users, where basic attention (BA) is perceived as a gateway to non-SUS care. However, in their country that not always a BA provide an effective assistance, triggering innumerable hospitalizations that would be liable to solubility in the AB, causing injury in the health of users and high expenses of the SUS. According to reports, the highest rates of hospitalizations are as follows: pneumonia, gastroenteritis, diabetes mellitus and systemic arterial hypertension, where all diseases are treated with BA. It is concluded that there is a high rate of hospitalizations avoidable by BA.