The Contrast None is identified by letter "Z" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to BP3LZ
Magnetic Resonance Imaging (MRI) of Right Wrist
MRI of R Wrist using Oth Contrast
MRI of R Wrist using Oth Contrast, Unenh, Enhance