Wiki modifier for procedure after surgery?

[Shrina]

Patient has a total knee. Comes in for effusion of that knee in the global period. Does the Aspiration get a 58 or a 78?

 

[drado72]

I would say modiifer 78 if he was returned to the OR for this; since it was not planned or staged for the patient to develop an effusion I would not use modifier 58.