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 0RN5X
Release Cervicothoracic Vertebral Disc, External Approach
Release Cervicothoracic Vertebral Disc, Perc Endo Approach
Release Cervicothoracic Vertebral Disc, Open Approach
Release Cervicothoracic Vertebral Disc, Perc Approach