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Q&A: Coding unsuccessful IVC filter placement

Q: A patient arrives at the interventional radiology department to have an inferior vena cava (IVC) filter inserted for portal hypertension and an iliac stent for May-Thurner syndrome. The physician is unsuccessful in accessing an appropriate portal vein branch, despite a few attempts to pass a wire into small portal branches, and aborts the placement. The plan is to reschedule and return with a transplenic approach.
 
Do we code the attempted IVC filter placement with modifier -74 (discontinued outpatient procedure after anesthesia administered) and the complete iliac stent procedure? Or do we code the extent of the IVC filter placement (that being venography) with the complete procedure? Or do we only code the completed procedure?

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