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 B538ZZ
Magnetic Resonance Imaging (MRI) of Superior Vena Cava
MRI of Sup Vena Cava using Oth Contrast, Unenh, Enhance
MRI of Sup Vena Cava using Oth Contrast