A doctor performs acupuncture on a paralyzed patient at the Milwaukee VA Medical Center. Veterans eligible for VA treatment would lose federal tax credits under a House-passed repeal of Obamacare – even if they choose not to accept VA care. Carrie Antlfinger AP
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The rate of uninsured veterans under age 65 fell by nearly 40 percent during the first two years of Obamacare’s coverage provisions, a study by the Urban Institute think tank found.

The number of veterans who did not have health care coverage fell from 980,000 in 2013 to 552,000 in 2015. Most uninsured veterans in that category had incomes that made them eligible for either the Medicaid expansion or subsidies under Obamacare.

Veterans’ families also gained from the Affordable Care Act, the study shows. The rate of spouses of military veterans without insurance fell from 9.2 percent to 5.5 percent, and the rate among children dropped from 4.5 percent to 2.9 percent.

“It’s common knowledge that veterans suffer from very unique health care needs, including PTSD and musculoskeletal disorders, and that’s the kind of long-term services that Medicaid provides,” said Andrea Callow, a Medicaid policy analyst at the consumer group Families USA. “We know that hundreds of thousands of them are enrolled in the Medicaid program, as well as their families, so when you cut the program the way that AHCA does . . . you’re going to get veterans who get hit by it.”

40 percent The drop in the rate of uninsured veterans under the age of 65 during the first two years of Obamacare’s coverage provisions

Many veterans joined a Twitter campaign Friday opposing the bill, using the hashtag #IAmAPreexistingCondition. Many said they were especially concerned about post-traumatic stress disorder being classified as a pre-existing condition, a change that would make their health care more expensive.

“#IAmAPreexistingCondition and so is every other veteran,” tweeted one user.

“I am a disabled veteran that suffers from depression a condition on the list! Didn’t Trump promise 2 care 4 us?” asked another.

The new plan would alter prohibitions in the Affordable Care Act that barred insurers from charging higher premiums to people with pre-existing health problems.

“In terms of PTSD the risks are real, just as for all pre-existing conditions under the bill,” said Judith Solomon, vice president for health policy at the Center on Budget and Policy Priorities. “It’s not only that people may have to pay more, it’s also with a waiver of essential health benefits the treatment they need may not be available regardless of whether they can purchase the coverage.”

CORRECTION: An earlier version of this story gave an incorrect title and party affiliation for Sen. Tammy Duckworth of Illinois. She is a Democrat.

Vera Bergengruen: 202-383-6036, @verambergen