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National Cancer Data Base - Data Dictionary PUF 2014

Radiation Ended, Days from Start of Radiation

DD_category: 
PUF Data Item Name: 
RAD_ELAPSED_RX_DAYS
length: 
3
Allowable values: 
0 - 999
Description: 
For diagnosis years prior to 2003, this item uses a single ROADS item containing the number of elapsed days between the start and end of radiation. For diagnosis years 2003 and later, this item is calculated as the number of days between the date radiation started (NAACCR Item #1210) and the date on which radiation therapy ended (NAACCR Item #3220). 1 is added to the number of days elapsed. This means that if radiation starts and ends on the same date, then 1 day has elapsed, if radiation ends the day after it is started, then 2 days have elapsed, and so on.
Registry Coding Instructions: 

None.

Code

Definition

0

None, radiation not administered

1-998

Number of elapsed days

999

Missing or incomplete dates for radiation start and end, days elapsed missing, or unknown if had radiation