Supporters of the Affordable Care Act cheer outside the Supreme Court in Washington, D.C., after a majority on the court ruled that Obamacare tax credits can continue to go to residents of any state. Mark Wilson/Getty Images hide caption

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"Nearly 1 in 3 uninsured Americans have already been covered — more than 16 million people -– driving our uninsured rate to its lowest level ever," President Obama told a cheering crowd at the Catholic Health Association's annual conference Tuesday. Jonathan Ernst/Reuters/Landov hide caption

itoggle caption Jonathan Ernst/Reuters/Landov

An analysis shows the monthly premiums for many people with Obamacare policies will not much change in 2016. But the high increases of some policies are drawing fire. Rob Colvin/ImageZoo/Corbis hide caption

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Secretary of Health and Human Services Sylvia Burwell talks before a Capitol Hill hearing Wednesday with Rep. Paul Ryan, R-Wis., as Rep. Pat Meehan, R-Pa., looks on. Getty Images hide caption

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Renee Mitchell says even though she has health insurance she'll have trouble paying for the eye surgery she needs to save her vision. Jim Burress/WABE hide caption

itoggle caption Jim Burress/WABE

If you're at high risk of hepatitis B infection, your insurance company should pay for testing for the virus without passing any of the cost on to you. London School of Hygiene and Tropical Medicine/Science Source hide caption

itoggle caption London School of Hygiene and Tropical Medicine/Science Source

There are legal questions about how far employers can go to encourage participation in wellness programs. Bjorn Rune Lie/Ikon Images/Getty Images hide caption

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Retired California school teacher Mikkel Lawrence sits with his cat, Max. Lawrence has hepatitis C and has struggled to afford the medicine he needs to treat it. April Dembosky/KQED hide caption

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If the Food and Drug Administration has approved a type of prescription contraception, then insurers must cover at least one option at no cost to the consumer. BSIP/Science Source hide caption

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More than 80 percent of the people getting federal subsidies to defray the cost of their monthly health insurance premiums have jobs, statistics suggest. And many are middle class. Jen Grantham/iStockphoto hide caption

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St. Agnes Hospital in Baltimore is one of the 131 hospitals run by Ascension Health. It's a not-for-profit, Catholic health care system that treats many low-income patients. St. Agnes Hospital hide caption

itoggle caption St. Agnes Hospital