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 01NA0
Release Lumbosacral Plexus, Percutaneous Endoscopic Approach
Release Lumbosacral Plexus, Percutaneous Approach
Release Lumbosacral Plexus, Open Approach