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 0NQLX
Repair Left Palatine Bone, Percutaneous Approach
Repair Left Palatine Bone, Percutaneous Endoscopic Approach
Repair Left Palatine Bone, Open Approach
Repair Left Palatine Bone, External Approach