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 0SJ2X
Inspection of Lumbar Vertebral Disc, Open Approach
Inspection of Lumbar Vertebral Disc, External Approach
Inspection of Lumbar Vertebral Disc, Percutaneous Approach
Inspection of Lumbar Vertebral Disc, Perc Endo Approach