Schema Discriminator 1: Histology Discriminator for 9591/3
This input is used for staging
Description
There are multiple hematopoietic terms that have the same ICD-O histology code (9591/3). However, for purposes of stage grouping AJCC 8th edition, they are in different chapters. A schema discriminator is necessary to distinguish between these histology terms so that the appropriate sub(chapter)/schema is used.Notes
**Note:** **Schema Discriminator for 9591/3** * A schema discriminator is used to discriminate for histology 9591/3: Non-Hodgkin lymphoma to determine which Stage Group table to use.| Code | Description | Schema ID #/Description |
|---|---|---|
| 1 | Splenic B-cell lymphoma/leukemia, unclassifiable | 00830: HemeRetic |
| 2 | Hairy cell leukemia variant Prolymphocytic variant of hairy cell leukemia |
00830: HemeRetic |
| 3 | Splenic diffuse red pulp small B-cell lymphoma Splenic marginal zone lymphoma, diffuse variant Splenic red pulp lymphoma with numerous basophilic villous lymphocytes Splenic lymphoma with villous lymphocytes |
00790: Lymphoma (excluding CLL/SLL) |
| 9 | Non-Hodgkin lymphoma, NOS Any other terminology describing non-Hodgkin lymphoma, NOS |
00790: Lymphoma (excluding CLL/SLL) |
| <BLANK> | Histology is NOT 9591, Discriminator is not necessary |