CMS released updated I/OCE specifications in January with several changes that could require providers to examine claims submitted early in 2015 that include comprehensive APCs (C-APC) to ensure proper payment.
When CMS introduced the -X{EPSU} modifiers in August 2014 to be used in specific instances to replace modifier -59 (distinct procedural service), the agency encouraged "rapid migration" to the new modifiers.
The policies that CMS publishes each year in the OPPS proposed rule don't always come as a surprise. Sometimes, CMS will announce its future intent in a previous rule in order to notify providers about data it is looking at or requesting comments on.