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 09CW0
Extirpation of Matter from R Sphenoid Sinus, Open Approach
Extirpate matter from R Sphenoid Sinus, Perc Endo
Extirpation of Matter from Right Sphenoid Sinus, Endo
Extirpation of Matter from R Sphenoid Sinus, Perc Approach