Issue: Since enactment of the Affordable Care Act (ACA), many more women have health insurance than before the law, in part because it prohibits insurer practices that discriminate against women. However, gaps in women's health coverage persist. Insurers often exclude health services that women are likely to need, leaving women vulnerable to higher costs and denied claims that threaten their economic security and physical health. Goal: To uncover the types and incidence of insurer exclusions that may disproportionately affect women's coverage. Method: The authors examined qualified health plans from 109 insurers across 16 states for 2014, 2015, or both years. Key findings and conclusions: Six types of services are frequently excluded from insurance coverage: treatment of conditions resulting from noncovered services, maintenance therapy, genetic testing, fetal reduction surgery, treatment of self-inflicted conditions, and preventive services not covered by law. Policy change recommendations include prohibiting variations within states' "essential health benefits" benchmark plans and requiring transparency and simplified language in plan documents.