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 B03BZ
MRI of Spinal Cord using Oth Contrast, Unenh, Enhance
Magnetic Resonance Imaging (MRI) of Spinal Cord
MRI of Spinal Cord using Oth Contrast