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        Item #
        Length
        Source of Standard
        Year Implemented
        Version Implemented
        Year Retired
        Version Retired
        Column #
    
    
        3926
        1
        NAACCR
        2018
        18
        
        
        1731 - 1731
    



NAACCR XML: Tumor.schemaDiscriminator1




Description
Captures additional information needed to generate AJCC ID [995] and Schema ID [3800] for some anatomic sites. Discriminators can be based on sub site, histology or other features which affect prognosis.
Rationale
A schema discriminator is used to assign AJCC ID [995] when site and histology alone are insufficient to identify the applicable AJCC staging method and to assign Schema ID [3800], 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.