Dec 6 (Reuters) - Growth in healthcare spending in the United States slowed in 2016 following two years of expansion under the Affordable Care Act, a government health agency reported on Wednesday.
Health spending increased 4.3 percent to $3.3 trillion compared to a 5.8 percent growth rate in 2015, according to a report by the Centers for Medicare and Medicaid Services (CMS), which administers the government's health programs.
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The cost of health as a share of the economy increased 0.2 points to 17.9 percent from 17.7 percent in 2015.
The decline was driven by slower enrollment growth in health insurance programs, which in turn lead to decreased use of medical services, the report found.
Medicare, the federal health program for the elderly, and Medicaid, the government's program for the poor, each reduced spending and fewer people enrolled in private health insurance following a big coverage expansion under Obamacare.
Roughly 10.2 million people gained Medicaid coverage in 2014 and 2015 combined, and 8.7 million people gained private health insurance, taking the insured percentage of the population from 86 percent in 2013 to nearly 91 percent in 2015.
In 2016, out-of-pocket spending by consumers on health costs not covered by insurance rose 3.9 percent compared with 2.8 percent in 2015. The increase was driven in part by an ongoing shift towards enrollment in high-deductible health plans.
Spending on retail prescription drugs grew 1.3 percent in 2016 compared with 12.4 percent in 2014 and 8.9 percent in 2015. The slowing was driven by fewer new drugs being introduced and less spending on pricey treatments for hepatitis C.
The 1.3 percent increase in drug spending was in line with the average growth rate of 1.2 percent from 2010 to 2013.
Enrollment growth in Medicare remained fairly steady at 2.8 percent in 2016. However, spending growth slowed to 3.6 percent from 4.8 percent in 2015, driven by slower spending per enrollee on both the fee-for-service and Medicare Advantage portions of the program.
Medicaid spending growth fell to 3.9 percent from 9.5 percent in 2015 and 11.5 percent in 2014, when growth was driven largely to the initial impact of Medicaid expansion under the Affordable Care Act.
Spending on private health insurance rose 5.1 percent to $1.1 trillion, which was slower than the 6.9 percent growth in 2015. The decline was driven by slower enrollment growth following expansion under Obamacare. (Reporting by Toni Clarke in Washington Editing by Chizu Nomiyama)