NAACCR Item #3927: Schema Discriminator 2
|Item #||Length||Source of Standard||Year Implemented||Version Implemented||Year Retired||Version Retired|
NAACCR XML: Tumor.schemaDiscriminator2
Captures additional information needed to generate AJCC ID  and Schema ID  for some anatomic sites. Discriminators can be based on sub site, histology or other features which affect prognosis.
A schema discriminator is used to assign AJCC ID  when site and histology alone are insufficient to identify the applicable AJCC staging method and to assign Schema ID , which links each case to the appropriate SSDIs, Summary Stage and EOD data collection system.
Codes (The information recorded in Schema Discriminator differs for each anatomic site. See the SSDI manual for most current version of the site-specific codes and coding structures.)
Each Site-Specific Data Item (SSDI) applies only to selected primary sites, histologies, and years of diagnosis. Depending on applicability and standard-setter requirements, SSDIs may be left blank.