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 BG33Z
MRI of Parathyroid Gland using Oth Contrast, Unenh, Enhance
Magnetic Resonance Imaging (MRI) of Parathyroid Glands
MRI of Parathyroid Gland using Oth Contrast