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 B8020Z
Plain Radiography of Bi Lacrimal Duct using Oth Contrast
Plain Radiography of Bi Lacrimal Duct using L Osm Contrast
Plain Radiography of Bi Lacrimal Duct using H Osm Contrast