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 0LJXX
Inspection of Upper Tendon, Open Approach
Inspection of Upper Tendon, Percutaneous Endoscopic Approach
Inspection of Upper Tendon, Percutaneous Approach
Inspection of Upper Tendon, External Approach