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 04N50
Release Superior Mesenteric Artery, Open Approach
Release Superior Mesenteric Artery, Percutaneous Approach
Release Superior Mesenteric Artery, Perc Endo Approach