http://khn.org/news/trumps-debate-claim-on-health-care-costs-it-depends-what-you-mean-by-cost/

Health care finally came up as an issue in the second presidential debate in St. Louis Sunday night. But the discussion may have confused more than clarified the issue for many voters.

During the brief exchange about the potential fate of the Affordable Care Act, Republican Donald Trump said this: “Obamacare is a disaster. You know it. We all know it. It’s going up at numbers that nobody’s ever seen worldwide. Nobody’s ever seen numbers like this for health care.”

Let’s parse that discussion of costs piece by piece. Because when it comes to health care, there are many different types of costs: those for governments, employers and individuals. And those costs don’t always go up and down at the same time.

First, the federal government’s spending on the Affordable Care Act’s insurance is coming in under budget projections. According to the official scorekeeper, the Congressional Budget Office (CBO), in March, the net cost of the insurance coverage provisions of the law — including tax credits to subsidize some lower-income customers’ premiums and costs for adding people to Medicaid — “is lower by $157 billion, or 25 percent” than the estimate when the law was enacted in 2010.

Much of that is because CBO originally estimated that large numbers of employers would stop providing insurance to workers and send them to the law’s online marketplaces, where many of them would get federal subsidies. That didn’t happen. Medicaid spending increased more than CBO projected, but that was more than offset by the lower spending on tax credits.