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 DBY6FZ
Plaque Radiation of Mediastinum
Hyperthermia of Mediastinum
Laser Interstitial Thermal Therapy of Mediastinum
Contact Radiation of Mediastinum