The Isotope 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 DFY18Z
Hyperthermia of Gallbladder
Plaque Radiation of Gallbladder
Intraoperative Radiation Therapy (IORT) of Gallbladder
Laser Interstitial Thermal Therapy of Gallbladder
Contact Radiation of Gallbladder