SEER Training Modules
11/27/12 - The NCI is working on updating materials.
ICD-10 Categories Not Used in ICD-O-3
As noted previously, the ICD-10 categories C00-C97 include a few categories that are either based on morphology or denote metastatic or secondary neoplasms which are described by the behavior code in ICD-O. Figure 5 shows the ICD-10 categories omitted from the topography section of ICD-O.
ICD-10 Equivalent ICD-O, Third Edition, Code
| Category | Term | Site | Histology | Behavior |
|---|---|---|---|---|
| C43 | Melanoma of skin | C44._ | M-872—M-879 | /3 |
| C45 | Mesothelioma | C__._ | M-905 | /3 |
| C46 | Kaposi's sarcoma | C__._ | M-9140 | /3 |
| C81-C96 | Malignant neoplasms of lymphoid, hematopoietic and related tissue | C00-C80 | M-959-M-998 | /3 |
| C78 | Secondary malignant neoplasms of respiratory and digestive systems | C15-C39 | M-________ | /6 |
| C79 | Secondary malignant neoplasms of other specified sites | C00-C14, C40-C80 |
M-________ | /6 |
| D00-D09 | In situ neoplasms | C00-C80 | M-________ | /2 |
| D10-D36 | Benign neoplasms | C00-C80 | M-________ | /0 |
| D37-D48 | Neoplasms of uncertain and unknown behavior | C00-C80 | M-________ | /1 |
| C97 | Malignant neoplasms of independent (primary) multiple sites | code each one | /3 |
The C81-C96 section of ICD-10 is used for malignant neoplasms of lymphoid, hematopoietic and related tissues. In ICD-O, Third Edition, these are assigned specific morphology codes and the behavior code /3. The morphology code, combined with the appropriate topography code in the range C00-C80, expresses the complete diagnosis. For example, in ICD-10, lymphocytic lymphoma of the stomach is coded C83.0. In ICD-O, small cell (diffuse) non-Hodgkin lymphoma would be coded to stomach C16.9 and the morphology to M-9670/3 (diffuse small cell lymphoma).
The C97 category in ICD-10 is not included in ICD-O as each primary site is usually coded separately. Guidelines for determining what constitutes multiple primaries vary among countries. (See section on Multiple Primary Neoplasms)
