X-Z
X12 Standard
The term currently used for any X12 standard that has been approved since the most recent release of X12 American National Standards. Since a full set of X12 American National Standards is only released about once every five years, it is the X12 standards that are most likely to be in active use. These standards were previously called Draft Standards for Trial Use.
X12/PRB
The X12 Procedures Review Board.
X12
An ANSI-accredited group that defines EDI standards for many American industries, including health care insurance. Most of the electronic transaction standards mandated or proposed under HIPAA are X12 standards.
XML
Extensible Markup Language.