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 0MNCX
Release Upper Spine Bursa and Ligament, External Approach
Release Upper Spine Bursa and Ligament, Perc Endo Approach
Release Upper Spine Bursa and Ligament, Perc Approach
Release Upper Spine Bursa and Ligament, Open Approach