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 04CY0
Extirpation of Matter from Lower Artery, Open Approach
Extirpation of Matter from Lower Artery, Perc Approach
Extirpation of Matter from Lower Artery, Perc Endo Approach