The objective of this study was to observe the characteristics of falls occurring in the inpatient population at a tertiary hospital. Eight hundred and twenty-six Adverse Events Notification Reports were analyzed over a 30 months period, and 0.30 falls per 1,000 patients/day were reported. Falls from beds were the most frequent (55%), showing the highest occurrence in the neurology ward. A higher frequency of falls was observed at night time (63.7%), during the first five hospitalization days (61.7%), in male patients (57.5%) over 60 years old (50%). In cases of falls from a bed, the diagnoses were related to infectious and parasitic diseases (18.2%), diseases affecting the nervous system (18.2%) and those affecting the circulatory system (13.7%). In cases of falls from one's own height, they were related to neoplasms (19.4%) and diseases affecting the genitourinary system (16.1%). It is concluded that high importance should be placed on studying the population to characterize those at high risk for falls to assist in the implementation of preventive measures.