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 0KNJX
Release Left Thorax Muscle, Open Approach
Release Left Thorax Muscle, External Approach
Release Left Thorax Muscle, Percutaneous Approach
Release Left Thorax Muscle, Percutaneous Endoscopic Approach