If you can point me to explanations (I've looked on the net briefly...I could not find anything by a source I trusted), I would be grateful. BTW: I don't trust anything that has ".gov" in it...or the Kaiser Foundation. I have no trust in right wing sources either.
PwC has a short primer on what's happening right now (the first item in particular is what I'm talking about, though the second is also closely related): "Healthcare reform: Five trends to watch as the Affordable Care Act turns five."
McKinsey has a longer piece (which has a bit more perspective on why it's taken so long to start aggressively doing this) on the subject: "The Trillion Dollar Prize: Using outcomes-based payment to address the US healthcare financing crisis."
Or read a short article from The Econoimst[/] laying out how these trends (including the payment shifts away form fee-for-service under the ACA) are fitting together: "Shock treatment:A wasteful and inefficient industry is in the throes of great disruption."
There's no shortage of reading material on payment reform and delivery system reform and the close relation between the two.