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 0RN4X
Release Cervicothoracic Vertebral Joint, Open Approach
Release Cervicothoracic Vertebral Joint, Perc Approach
Release Cervicothoracic Vertebral Joint, External Approach
Release Cervicothoracic Vertebral Joint, Perc Endo Approach