Alternate Name Item # Length Source of Standard Implemented Year Implemented Version Retired Year Retired Version Column #
Laterality at Diagnosis (SEER)
410 1 SEER/CoC 544 - 544
Description
Code for the side of a paired organ, or the side of the body on which the reportable tumor originated. This applies to the primary site only.
Codes
0 Not a paired site
1 Right: origin of primary
2 Left: origin of primary
3 Only one side involved, right or left origin unspecified
4 Bilateral involvement at time of diagnosis, lateral origin unknown for a single primary; or both ovaries involved simultaneously, single histology; bilateral retinoblastomas; bilateral Wilms' tumors
5 Paired site: midline tumor
9 Paired site, but no information concerning laterality