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 04NS0
Release Left Posterior Tibial Artery, Open Approach
Release Left Posterior Tibial Artery, Perc Endo Approach
Release Left Posterior Tibial Artery, Percutaneous Approach