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 0KN6X
Release Left Shoulder Muscle, Open Approach
Release Left Shoulder Muscle, Perc Endo Approach
Release Left Shoulder Muscle, Percutaneous Approach
Release Left Shoulder Muscle, External Approach