Sarah Gordon and team at Boston University will use national Medicaid claims for births from 2014-2016 to measure racial and ethnic differences in postpartum Medicaid enrollment and the prevalence and timing of pregnancy-related complications in the postpartum year. They also will use linked income, birth certificate, and all-payer claims data from Colorado to estimate the causal effect of postpartum Medicaid eligibility beyond 60 days on postpartum enrollment, utilization, and health outcomes compared to commercial insurance.