The Treatment Site Rectum is identified by number "7" and occupies the 4th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to DDY7
Plaque Radiation of Rectum
Intraoperative Radiation Therapy (IORT) of Rectum
Laser Interstitial Thermal Therapy of Rectum
Hyperthermia of Rectum
Contact Radiation of Rectum