The new CBO score for AHCA is a big deal. Here are 4 reasons why.

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You remember all the hubbub about the House passing the American Health Care Act without having a Congressional Budget Office score? Well, next Wednesday, we're getting one.

The new CBO score on the AHCA is going to be important for a number of reasons: politics, policy, and procedure. It will help determine the health care plan in the Senate and define the House's legislation in the public eye.

So what should you be looking for when the CBO releases its report? These four things oughta be at the top of your list:

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1) How many people are projected to be uninsured?

President Donald Trump promised universal coverage, and the initial versions of the AHCA fell well short. The CBO's earlier findings — that 24 million more Americans would be uninsured in 2026, versus what would be expected under Obamacare — quickly became omnipresent in the debate.

We're going to get a new number in the upcoming CBO score. You can expect that figure, which is still likely to be in the tens of millions, to be deployed against every vulnerable House Republican in 2018 — and to be used by Democrats to try to slow down the Senate's health care debate.

This is what the whole exercise has been about, even in the eyes of many Republicans: How can we cover more Americans?

2) What budget baseline will the Senate have?

The rules for the budget process that Senate Republicans are using to pass their health care bill without any Democratic votes are hopelessly complex, but they do set the parameters for what the upper chamber can and cannot do. The CBO will tell us a couple of important things.

The first quirk: The Senate is not allowed to save any less money in its health care bill than the House did. The previous CBO report said an earlier version of the House plan saved $150 billion, but the House added some provisions and funding at the last minute that should change that.

The Senate is planning to spend more money — by beefing up the financial assistance for people to buy private insurance and by more slowly phasing out Obamacare's Medicaid expansion — and any of those new costs will have to be offset.

The new CBO score will tell us what baseline the Senate has to meet once all its proposed changes shake out.

3) Does the bill save enough money for the Senate rules?

Washington was sent into a tizzy on Thursday night when Bloomberg reported that House leaders had not actually sent the AHCA to the Senate because they were waiting for a CBO score. The implication was that the House might have to change its bill and pass it again — or even start over.

I broke down all the back-of-the-napkin math that's fueling this speculation. It's still a long shot, but here's what you should know: The House bill must save $2 billion total — $1 billion each for the two Senate committees responsible for the plan — in order to comply with Senate rules.

There is at least a chance that the House bill won't achieve those savings after the last-minute changes that were added to the bill and never scored by the CBO before the House passed it. The new CBO report next week should tell us where things stand.

4) How big of an impact did the last-minute changes have?

Those last-minute changes to the AHCA — so politically important to squeaking the bill through the House — have another test to pass when the new CBO score comes out.

Some budget experts are dubious that the AHCA state waivers, which allow states to opt out of key Obamacare regulations, pass muster under the Senate rules. Those rules are supposed to limit these bills to policies that directly affect government spending or revenue. Changing insurance regulations might not make the cut.

But, some experts have told me, if the CBO projects that the waivers do have a significant budget impact — more likely if the office expects a fair number of states would want them — then they become easier to justify under the Senate rules.

We'll find out next week what the CBO expects.

Chart of the Day:

How much money does NIH really spend on research? The White House is expected to propose deep cuts to the National Institutes of Health in the president's budget next week. Part of their justification has been that a lot of its money isn't actually being spent on research. Axios took a look at the NIH's books to sort it out.

Kliff’s Notes

Your daily top health care reads, with research help from Caitlin Davis

"The White House’s new war on drugs could drive up the HIV rate" : “The new policy is expected to increase the prison population and punish minority groups, particularly African Americans, that have been disproportionately subjected to mandatory minimums for minor drug crimes. But there’s a looming, and less obvious, side effect of this new directive: The White House’s “tough on crime” approach is almost certainly going to exacerbate the spread of infectious diseases like HIV." —Julia Belluz, Vox

“The new policy is expected to increase the prison population and punish minority groups, particularly African Americans, that have been disproportionately subjected to mandatory minimums for minor drug crimes. But there’s a looming, and less obvious, side effect of this new directive: The White House’s “tough on crime” approach is almost certainly going to exacerbate the spread of infectious diseases like HIV." —Julia Belluz, Vox "Ryan: House do-over on Obamacare repeal unlikely" : "Speaker Paul Ryan said Friday he didn't think the House would have to revote on its high-stakes Obamacare repeal legislation, despite a technical snag that raised the prospect of a do-over. 'We're moving [the bill] over to the Senate probably in a couple weeks,' Ryan told conservative radio host Hugh Hewitt."—Kyle Cheney, Politico

"Speaker Paul Ryan said Friday he didn't think the House would have to revote on its high-stakes Obamacare repeal legislation, despite a technical snag that raised the prospect of a do-over. 'We're moving [the bill] over to the Senate probably in a couple weeks,' Ryan told conservative radio host Hugh Hewitt."—Kyle Cheney, Politico "Nearly 700 vacancies at CDC because of Trump administration’s hiring freeze": "Nearly 700 positions are vacant at the Centers for Disease Control and Prevention because of a continuing freeze on hiring that officials and researchers say affects programs supporting local and state public health emergency readiness, infectious disease control and chronic disease prevention." —Lena H. Sun, The Washington Post

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