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 0JN6X
Release Chest Subcutaneous Tissue and Fascia, Perc Approach
Release Chest Subcutaneous Tissue and Fascia, Open Approach
Release Chest Subcu/Fascia, Extern Approach