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 B21F0Z
Fluoroscopy of Other Bypass Graft using Other Contrast
Fluoroscopy of Other Bypass Graft using H Osm Contrast
Fluoroscopy of Other Bypass Graft using Low Osmolar Contrast