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 01NQ0
Release Sacral Plexus, Open Approach
Release Sacral Plexus, Percutaneous Endoscopic Approach
Release Sacral Plexus, Percutaneous Approach