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 BF35YZ
Magnetic Resonance Imaging (MRI) of Liver using Oth Contrast
Magnetic Resonance Imaging (MRI) of Liver
MRI of Liver using Oth Contrast, Unenh, Enhance