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 BG34YZ
MRI of Thyroid Gland using Oth Contrast, Unenh, Enhance
Magnetic Resonance Imaging (MRI) of Thyroid Gland
MRI of Thyroid Gland using Oth Contrast