NAACCR Item #3926: Schema Discriminator 1
|Item #||Length||Source of Standard||Year Implemented||Version Implemented||Year Retired||Version Retired|
NAACCR XML: Tumor.schemaDiscriminator1
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.
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.