It could leave up to 500,000 children without coverage and cost some families thousands of dollars.

WASHINGTON — A "family glitch" in the 2010 health care law threatens to cost some families thousands of dollars in health insurance costs and leave up to 500,000 children without coverage, insurance and health care analysts say.
That's unless Congress fixes the problem, which seems unlikely given the House's latest move Friday to strip funding from the Affordable Care Act.
Congress defined "affordable" as 9.5% or less of an employee's household income, mostly to make sure people did not leave their workplace plans for subsidized coverage through the exchanges. But the "error" was that it only applies to the employee — and not his or her family. So, if an employer offers a woman affordable insurance, but doesn't provide it for her family, they cannot get subsidized help through the state health exchanges.
That can make a huge difference; the Kaiser Family Foundation said an average plan for an individual is about $5,600, but it goes up to $15,700 for families. Most employers help out with those costs, but not all.
"We saw this two-and-a-half years ago and thought, 'Has anyone else noticed this?'"