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Table 4 Problems in cases flagged for checking (selected cancer sites).

From: Consistency and accuracy of diagnostic cancer codes generated by automated registration: comparison with manual registration

Type of Problem No. of cases with specific problems/total flagged cases for cancer site *
ICD-9 code 140–149 158,159 170,171 172 179–184 194 195–199 200–202 204–208
Cases notified by one source code only 3/63 6/14 2/13 22/45 32/139 3/7 9/73 20/83 21/43
Discordant Codes          
   Within a single organ system 25/63 8/14 2/13 0/45 40/139 0/7 16/73 72/83 21/43
   Within more than one organ system but not multiple primaries 33/63 0/14 9/13 22/45 65/139 4/7 48/73 3/83 0/43
   Multiple primary cancers 33/63 0/14 1/13 1/45 13/139 0/7 0/73 3/83 1/43
   Extranodal/nodal site discrepancy 0/63 0/14 0/13 0/45 0/139 0/7 0/73 17/83 0/43
  1. *A case may have more than one problem