GA-GZ:
Here's the 'A' to 'Z' of ABN Modifiers in Simple Chart Form
Published on Wed Jun 08, 2011
Use this table to pick the right modifier -- every time. With four choices and changing definitions in recent years, ABN modifiers are a common cause of confusion. Think of the modifier GZ policy change discussed in "GZ Will Earn Quick Denial Starting July 1" on page 43 as an opportunity to refresh your knowledge of all ABN-related modifiers. At a glance: This table can help you sort out proper ABN modifier use for your claims.