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 00NJ3
Release Trochlear Nerve, Open Approach
Release Trochlear Nerve, Percutaneous Approach
Release Trochlear Nerve, Percutaneous Endoscopic Approach