The fetal death rate is an indicator of population health, and represents the quality of maternal and child care in a country. Adequate registration and systematic study of the causes of fetal deaths and their associated conditions provide opportunities for the reduction of deaths. This study aims to identify fetal deaths assisted in ten reference maternity hospitals in Brazil, from 2009 to 2018 and their causes and related conditions. The use of CODAC was intended to improve the record of establishment of causes, knowing the number of unspecific or unknown causes.