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 BL32Z
Magnetic Resonance Imaging (MRI) of Upper Extremity Tendons
MRI of Up Extrem Tendon using Oth Contrast
MRI of Up Extrem Tendon using Oth Contrast, Unenh, Enhance