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 CG111Z
Planar Nucl Med Imag Parathyroid Gland w Oth Radionuclide
Planar Nucl Med Imag Parathyroid Gland w Technetium 99m
Planar Nucl Med Imag of Parathyroid Gland using Thallium 201