The date on which the patient completes or receives the last radiation treatment at any facility. See Data Descriptor Table for date format. Use RX DATE RAD ENDED FLAG [3221] if there is no appropriate or known date for this item.
 
Formerly RX Date--Radiation Ended.

The length of time over which radiation therapy is administered to a patient is a factor in tumor control and treatment morbidity. It is useful in evaluating the quality-of-care and the success of patient support programs designed to maintain continuity of treatment.