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 0LN2X
Release Left Shoulder Tendon, External Approach
Release Left Shoulder Tendon, Open Approach
Release Left Shoulder Tendon, Percutaneous Approach
Release Left Shoulder Tendon, Perc Endo Approach