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 01NK0
Release Head and Neck Sympathetic Nerve, Perc Approach
Release Head and Neck Sympathetic Nerve, Perc Endo Approach
Release Head and Neck Sympathetic Nerve, Open Approach