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 0JN7X
Release Back Subcutaneous Tissue and Fascia, Perc Approach
Release Back Subcutaneous Tissue and Fascia, Extern Approach
Release Back Subcutaneous Tissue and Fascia, Open Approach