| # | Name | Location | Type | Details | Index | Description |
|---|---|---|---|---|---|---|
| .01 | unique identifier(+) | 0;1 | FREE TEXT | B | The unique identifier is used for file maintenance. | |
| 1 | descriptive title(+) | 0;2 | FREE TEXT | D | Full title (textual description, mixed case) representing a semantical type. | |
| 2 | class(+) | 0;3 | FREE TEXT | C | Three character mnemonic representing the semantical class for which this semantical type belongs. | |
| 3 | associated coding systems | 1;0 | MULTIPLE | 757.123 | This multiple field contains all of the classification systems (i.e., ICD, CPT, DSM) which have terms included in this semantical type. |