The Contrast High Osmolar 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 B4020
Plain Radiography of Hepatic Artery using Other Contrast
Plain Radiography of Hepatic Artery using L Osm Contrast
Plain Radiography of Hepatic Artery using H Osm Contrast