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 B233Z
MRI of Mult Cor A Graft using Oth Contrast, Unenh, Enhance
Magnetic Resonance Imaging (MRI) of Mult Cor A Graft
MRI of Mult Cor A Graft using Oth Contrast