Modifier 59

[KARREN]

Is it ok to still use modifier 59 or should we be using the sub modifiers XE, XS, XP, XU   

When was the effective day to start using the sub modifiers? 

[Michele]

It is ok to use modifier 59 if no other modifier that is more accurate is available.  The following is a good explanation of the use of 59, XE, XS, XP & XU.

http://www.novitas-solutions.com/webcenter/portal/MedicareJH/page172?_afrLoop=1514568142082000&_adf.ctrl-state=10xgcpfb2j_25&contentId=00087124#!