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 0SN6X
Release Coccygeal Joint, Percutaneous Approach
Release Coccygeal Joint, Open Approach
Release Coccygeal Joint, External Approach
Release Coccygeal Joint, Percutaneous Endoscopic Approach