Written by ADW News
(CNN) -- It's flown under the radar, but perhaps the most dramatic element of Obamacare isn't changes to Medicare, or the requirement for millions to purchase insurance --- it's the planned expansion of Medicaid.
That expansion would cover an additional 21.3 million people within the next decade, reducing the number of uninsured nearly by half, according to a new report from the Kaiser Family Foundation, an organization specializing in health care policy.
While that sounds like good news, the sheer size of the expansion has many people worried about cost. Since the Supreme Court ruled that states cannot be forced to participate, eight states have said they won't expand their current Medicaid programs, and several others have said they may follow suit.
But the KFF report says those states may be making life unnecessarily hard for their poorest citizens.
Why? Let's start with the basics: The cost of Medicaid is currently shared by states and the federal government, with Washington picking up a little more than half the bill. Under Obamacare, the feds would carry a much heavier load: 100% of new costs for the first three years, 95% starting in 2017 and 90% in 2020 and beyond.
The potential impact is huge. Many poor Americans do not now qualify for health insurance. This holds especially true in southern states, which impose strict income limits.
To pick a typical example, in Georgia, a working mother in a family of three is ineligible for Medicaid if she makes more than $9,080 in a year. Under Obamacare, she could earn up to $26,344 and still be insured through the program.
(Beyond that, if she didn't have insurance through her job, she would have to purchase her own; to help her afford it she would receive a generous subsidy that would be phased out as her income grew.)
In August, Gov. Nathan deal told the Atlanta Journal-Constitution that Georgia would not participate in the expansion, saying, "I think that is something our state cannot afford." A year earlier, he claimed the expansion would cost each Georgia household nearly $1,000 annually.
But according to the new report from Kaiser, the average cost to a Georgia household would be just $73 a year --- a total of $2.54 billion over the next decade. In addition, Kaiser estimates the state would save $726 million in "uncompensated costs" --- money it now spends to reimburse hospitals who care for uninsured patients for free. The state's total cost would therefore be $1.81 billion, or $52 per household. For that, an additional 698,000 Georgians would receive insurance.
Deal's office did not immediately respond to a request for comment from CNN on Monday.
The report paints a similar picture in other states. In general, states that now have generous programs for the poor --- largely in New England and the Mid-Atlantic states - would actually save money through the expansion. That's because they could eliminate some state-funded safety net programs, since the beneficiaries would be covered under the expanded version of Medicaid.
Alan Weil of the Kaiser Family Foundation said he expects the math to eventually sway governors and state legislators, even where Obamacare has been politically toxic.
"The economics of this are very strongly in favor of adopting the expansion," says Weil. "Early decisions by states (to opt out) could be very different from those that are made a few years out."
™ & © 2012 Cable News Network, Inc., a Time Warner Company. All rights reserved.