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Updated March 2021
This document provides a disease code hierarchy created by OH-CCO. It lists ICD-O-3 Topography and Morphology (or Behavior) code combinations mapped to Clinical Practice Groups (and Subgroups). It also provides the conversion of ICD-10-CA Diagnosis Codes to ICD-O-3 mapped to Clinical Practice Groups (and Subgroups). Note: This is not the same as SEER site Groupings).
The “ICD10CA CPG” tab contains the mapping from ICD10CA “Diagnosis Code” (ICD10CA_CD) to ICDO3 Topography (ICDO3_TOPOG_CD) and Morphology (ICDO3_MORPH_CD) codes, and the CPG and subgroup assignment.
The “ICDO3 CPG” tab contains the mapping from ICDO3 Topography and Morphology codes to the CPG and subgroup assignment using the following steps:
Exact match between Topography code (ICDO3_TOPOG_CD) and full Morphology code (ICDO3_MORPH_CD), assign to CPG and subgroup.
If no exact match between Topography (ICDO3_TOPOG_CD) and full Morphology code (ICDO3_MORPH_CD), then match between Topography (ICDO3_TOPOG_CD) and the full Morphology code that ends with Behaviour (BEHAVIOUR_CD) = 0, 1, 2, 3, 6, 9, assign to CPG and subgroup.