tci Outpatient Facility Coding Alert - 2019 Issue 3
Reader Question: Break Down Coding Dynamics for Multi-Sinus Balloon Dilation
Question: How do I code a bilateral frontal sinus balloon dilation and a left sphenoid sinus balloon dilation? New Jersey Subscriber Answer The coding mechanics behind this procedure are especially tricky when working with the new set of endoscopic sinus surgery codes. First, you’ll want to report 31298 (Nasal/sinus endoscopy, surgical; with dilation of frontal and sphenoid sinus ostia (eg, balloon dilation)) with modifier LT (Left Side). Next, you will report 31296 (Nasal/sinus endoscopy, surgical; with dilation of frontal sinus ostium (eg, balloon dilation)) with modifiers RT (Right Side) and either XS (Separate Structure) or 59 (Distinct Procedural...
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