The Approach External is identified by letter "X" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 0NQNX
Repair Left Zygomatic Bone, Open Approach
Repair Left Zygomatic Bone, External Approach
Repair Left Zygomatic Bone, Percutaneous Endoscopic Approach
Repair Left Zygomatic Bone, Percutaneous Approach