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 0SNJX
Release Left Tarsal Joint, Percutaneous Approach
Release Left Tarsal Joint, External Approach
Release Left Tarsal Joint, Percutaneous Endoscopic Approach
Release Left Tarsal Joint, Open Approach