The Qualifier None is identified by letter "Z" and occupies the 6th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to B837ZZ
MRI of Bi Eye using Oth Contrast
MRI of Bi Eye using Oth Contrast, Unenh, Enhance
Magnetic Resonance Imaging (MRI) of Bilateral Eyes