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 09CX0
Extirpation of Matter from L Sphenoid Sinus, Open Approach
Extirpate matter from L Sphenoid Sinus, Perc Endo
Extirpation of Matter from Left Sphenoid Sinus, Endo
Extirpation of Matter from L Sphenoid Sinus, Perc Approach