The Approach Percutaneous is identified by number "3" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 05NL3
Release Intracranial Vein, Open Approach
Release Intracranial Vein, Percutaneous Approach
Release Intracranial Vein, Percutaneous Endoscopic Approach