Ectopic pregnancy is the leading cause of pregnancy-related death during the first trimester (1). Women who have one ectopic pregnancy are at increased risk for another such pregnancy and for future infertility (2). In the United States, the reported number of hospitalizations for ectopic pregnancy increased from 17,800 in 1970 to 88,400 in 1989 (1). This report summarizes trends in hospitalizations for ectopic pregnancy in the United States during 1990-1992 and presents the incidence of ectopic pregnancy in 1992, based on aggregated inpatient and outpatient data.