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 01NL3
Release Thoracic Sympathetic Nerve, Percutaneous Approach
Release Thoracic Sympathetic Nerve, Open Approach
Release Thoracic Sympathetic Nerve, Perc Endo Approach