| # | Name | Location | Type | Details | Index | Description |
|---|---|---|---|---|---|---|
| .001 | number | 11 | ||||
| .01 | name(+) | 0;1 | FREE TEXT | B | Identifies the ICD-O (International Classification of Diseases for Oncology (Third Edition)) terms. | |
| 1 | code | 0;2 | FREE TEXT | D | ||
| 2 | synonym/equivalent term | 1;0 | MULTIPLE | 169.32 | This field contains the synonyms and equivalent terms for this morphology. | |
| 3 | icdo-site | 0;5 | POINTER | 164.08 | POINTS TO THE ICDO SITE FILE. | |
| 4 | topography 1 | 0;6 | POINTER | 164 | AC | This field indicates a usual primary site (ICD-O TOPOGRPAHY) for this morphology. |
| 4.1 | topography 2 | 0;3 | POINTER | 164 | AC | This field indicates a usual primary site (ICD-O TOPOGRPAHY) for this morphology. |
| 43 | extension code set-1st ed | E;1 | POINTER | 164.5 | This field identifies the set of codes used to characterize extension for this topography in the first edition of SEER Extent of Disease Codes and Coding Instructions. | |
| 43.01 | extension code set-2nd ed | E;2 | POINTER | 164.5 | This field identifies the set of codes used to characterize extension for this topography in the second edition of SEER Extent of Disease Codes and Coding Instructions. | |
| 43.02 | extension code set-3rd ed | E;3 | POINTER | 164.5 | This field identifies the set of codes used to characterize extension for this topography in the third edition of SEER Extent of Disease Codes and Coding Instructions. | |
| 53 | lymph node code set-1st ed | L;1 | POINTER | 164.5 | This field identifies the set of codes used to characterize lymph node involvement for this topography in the first edition of SEER Extent of Disease Codes and Coding Instructions. | |
| 53.01 | lymph node code set-2nd ed | L;2 | POINTER | 164.5 | This field identifies the set of codes used to characterize lymph node involvement for this topography in the second edition of SEER Extent of Disease Codes and Coding Instructions. | |
| 53.02 | lymph node code set-3rd ed | L;3 | POINTER | 164.5 | This field identifies the set of codes used to characterize lymph node involvement for this topography in the third edition of SEER Extent of Disease Codes and Coding Instructions. | |
| 71 | histopathologic type | 0;8 | SET OF CODES | 1:Lymphoid 2:Embryonal 3:Epithelial 4:Reticuloendothelial 5:Sarcoma 6:Hematogenous 7:Melanoma 8:Nerve 9:Other | The HISTOPATHOLOGIC TYPE is the category (type) of morphology according to cell type. |