LOINC description : Part of the 10-digit EOD [779]. Detailed site-specific codes for anatomic EOD used
by SEER for tumors diagnosed from 1988 forward. This field is included in the COC
dataset, separate from EOD. Codes were revised effective January 1, 1998, to reflect
changes in the AJCC Cancer Staging Manual, Fifth Edition. Site-specific EOD codes
provide extensive detail describing disease extent. The EOD codes can be grouped into
different stage categories for analysis (e.g., historical summary stage categories
consistent with those used in published SEER data since 1973, or more recently, AJCC
stage groupings). The codes are updated as needed, but updates are usually backward
compatible with old categories. See Comparative Staging Guide for Cancer.. NAACCR
Data Standards and Data Dictionary Version 11;