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 C75K1Z
Nonimag Nucl Med Prob of Neck Lymph using Technetium 99m
Nonimag Nucl Med Prob of Neck Lymph using Oth Radionuclide