The Qualifier None is identified by letter "Z" and occupies the 6th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to BF001Z
Plain Radiography of Bile Ducts using Other Contrast
Plain Radiography of Bile Ducts using Low Osmolar Contrast
Plain Radiography of Bile Ducts using High Osmolar Contrast