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 DDY18Z
Plaque Radiation of Stomach
Contact Radiation of Stomach
Intraoperative Radiation Therapy (IORT) of Stomach
Hyperthermia of Stomach
Laser Interstitial Thermal Therapy of Stomach