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 0SJ6X
Inspection of Coccygeal Joint, Percutaneous Approach
Inspection of Coccygeal Joint, Open Approach
Inspection of Coccygeal Joint, External Approach
Inspection of Coccygeal Joint, Perc Endo Approach