The Approach Open is identified by number "0" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 09TR0
Resection of Left Maxillary Sinus, Endo
Resection of Left Maxillary Sinus, Open Approach
Resection of Left Maxillary Sinus, Perc Endo Approach