The Contrast Low Osmolar is identified by number "1" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to BF031
Radiography of Gallbladder & Bile Duct using H Osm Contrast
Radiography of Gallbladder & Bile Duct using Oth Contrast
Radiography of Gallbladder & Bile Duct using L Osm Contrast