new facet guidelines

What are the new facet joint guidelines that keep being referenced? I saw something a while back regarding limiting the numbers of facet procedure per rolling twelve months, but are there new medicare rules regarding therapeutic IA facet injections vs diagnostic? Is this just medicare for now or have some of the national carriers also changed their facet guidelines this year?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Pain Medicine Source Type: forums