Validation of a Claims-based Algorithm to Identify Pregestational Diabetes Among Pregnant Women in the United States

Identifying pregestational diabetes in pregnant women using administrative claims databases is important for studies of the safety of antidiabetic treatment in pregnancy, but limited data are available on the validity of case-identifying algorithms. The purpose of this study was to evaluate the validity of an administrative claims-based algorithm to identify pregestational diabetes.Using a cohort of pregnant women nested within the Medicaid...