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Table 2 Exclusions of three-character categories in ICD-10

From: Enriching a primary health care version of ICD-10 using SNOMED CT mapping

Chapter Priority
  I II III IV V VI VII VIII IX X XI XII XIII XIV XV XVI XVII XVIII XIX XX XXI XXII
I           .30      .01 .08      .01  
II                       
III .03 1.00   1.00            1.00 1.00 1.00 1.00 1.00    
IV                1.00 .07   1.00     
V                   1.00     
VI 1.00 1.00   1.00            1.00 1.00 1.00 1.00 1.00    
VII 1.00 1.00   1.00            1.00 1.00 1.00 1.00 1.00    
VIII 1.00 1.00   1.00            1.00 1.00 1.00 1.00 1.00    
IX 1.00 1.00   1.00   .01        .09   1.00 1.00 1.00 1.00 1.00    
X 1.00 1.00   1.00            1.00 1.00 1.00 1.00 1.00    
XI 1.00 1.00   1.00            1.00 1.00 1.00 1.00 1.00    
XII 1.00 1.00   1.00          .09   1.00 1.00 1.00 1.00 1.00    
XIII 1.00 1.00   1.00            1.00 1.00 1.00 1.00 1.00    
XIV 1.00 1.00   1.00            1.00 1.00 1.00 1.00 1.00    
XV .04     .01               1.00   .02  
XVI .01 1.00   1.00              1.00   1.00    
XVII     .26                   
XVIII                       
XIX                .03 .10       
XX                       
XXI                       
XXII                       
  1. The exclusions of three-character categories on the chapter level according to the excludes remarks at the beginning of each chapter in ICD-10 [7] are summarised in this table. The table shows the proportion of categories in the ICD-10 chapters in the columns that have priority over the ICD-10 chapters in the rows according to the excludes remarks.
  2. An example is that 26% of the three-character categories in chapter IV have priority over chapter XVII.