One rationale for extending Medicaid coverage to more people is to help them get to a doctor or clinic before a minor illness becomes a medical emergency. While the expansion of Medicaid under the Affordable Care Act may lead to a dramatic rise in emergency room use and hospitalizations for previously uninsured people, that increase seems to be largely temporary and should not lead to a dramatic impact on state budgets, according to an analysis from the UCLA Center for Health Policy Research released Wednesday.