Modifier Usage


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I recently accepted a job educating the coders and providers in lab and pathology. I have experience coding facility, but not for a reference lab. They have not been using any of the X modifiers and the supervisor is requesting that they start using them. I am not finding a lot of information on when to use 59 vs X modifiers for lab/path. Can anyone give me examples of when you would still use modifier 59. I have been using the X modifiers since 2015, but I am not sure when it would be appropriate to still use 59 in my new position. I appreciate any examples so I can review and pass it on to our coders.