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2007 Colon Histology Coding Rules: Adenocarcinoma Subtypes

Learn the rules and terms for classifying colon adenocarcinomas, including mucinous, signet ring, and mixed subtypes. Understand histology coding guidelines for single or multiple tumors.

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2007 Colon Histology Coding Rules: Adenocarcinoma Subtypes

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  1. MP/H Task Force Multiple Primary Rules Histology Coding Rules 2007 Colon

  2. Equivalent Terms, Definitions, and Illustrations • 98% adenocarcinoma • 10-15% produce enough mucin to be mucinous

  3. Equivalent Terms, Definitions, and Illustrations • Mixed histologies • Mucinous/colloid • Signet ring • Others are rare

  4. Equivalent Terms, Definitions, and Illustrations • Adenocarcinoma with mixed subtypes(8255): Rarely used for colon primaries (see introduction). • Adenocarcinoma, intestinal type(8144) is a form of stomach cancer. Do not use this code when the tumor arises in the colon.

  5. MP/H Task Force Multiple Primary Rules Histology Coding Rules 2007 Multiple Primary Rules

  6. MP/H Task Force Multiple Primary Rules Histology Coding Rules 2007 Unknown if Single or Multiple Tumors

  7. MP/H Task Force Multiple Primary Rules Histology Coding Rules 2007 Single Tumor

  8. MP/H Task Force Multiple Primary Rules Histology Coding Rules 2007 Multiple Tumors

  9. MP/H Task Force Multiple Primary Rules Histology Coding Rules 2007 Histology Rules

  10. MP/H Task Force Multiple Primary Rules Histology Coding Rules 2007 Single Tumor

  11. MP/H Task Force Multiple Primary Rules Histology Coding Rules 2007 Multiple Tumors Abstracted as a Single Primary

  12. MP/H Task Force

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