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 BP39Z
MRI of L Shoulder using Oth Contrast
Magnetic Resonance Imaging (MRI) of Left Shoulder
MRI of L Shoulder using Oth Contrast, Unenh, Enhance