Case Other Site Code

Field Length: 2

Record the two digit code for the site group into which this primary malignancy is categorized. Use Appendix C to determine the appropriate site group, based on the anatomic site and histology mentioned.

Site group code "55" is available only for 'Other Primaries' if you cannot determine to which site group the malignancy is coded. If 'lung cancer' is all that is known, code "23" for non-small cell lung.

Starting in 2004, site group 60 is assigned for all benign and borderline intracranial tumors.