The Approach Open is identified by number "0" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 0SN40
Release Lumbosacral Disc, Percutaneous Approach
Release Lumbosacral Disc, Open Approach
Release Lumbosacral Disc, Percutaneous Endoscopic Approach
Release Lumbosacral Disc, External Approach