Ambetter from Absolute Total Care Has South Carolina Residents Covered During Special Open Enrollment CMS opens a Special Enrollment Period for the federal Health Insurance Marketplace through May 15, 2021 News provided by Share this article COLUMBIA, S.C., March 2, 2021 /PRNewswire/ -- Now through May 15, South Carolina residents may select Ambetter from Absolute Total Care for healthcare coverage in 30 counties through the federal Health Insurance Marketplace. The Centers for Medicare & Medicaid Services (CMS) announced a special enrollment period (SEP) for individuals and families to apply and enroll for the coverage they need. As the COVID-19 pandemic has brought unprecedented challenges, Ambetter from Absolute Total Care continues to offer a variety of health insurance offerings that are among the most affordable in the state.