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 0NCN0
Extirpation of Matter from L Zygomatic Bone, Open Approach
Extirpate matter from L Zygomatic Bone, Perc Endo
Extirpation of Matter from L Zygomatic Bone, Perc Approach