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 B5121Z
Fluoroscopy of Intracranial Sinuses using Other Contrast
Fluoroscopy of Intracranial Sinuses using L Osm Contrast
Fluoroscopy of Intracranial Sinuses
Fluoroscopy of Intracranial Sinuses, Guidance
Fluoroscopy Intracran Sinus w H Osm Contrast, Guidance
Fluoroscopy Intracran Sinus w L Osm Contrast, Guidance
Fluoroscopy of Intracran Sinus using Oth Contrast, Guidance
Fluoroscopy of Intracranial Sinuses using H Osm Contrast