| .01 | semantic class(+) | 0;1 | FREE TEXT | | B | Three character (uppercase) mnemonic representing a semantical class. For
example, ORG - Organism, PRO - Procedures, ACT - Activities, etc. |
| 1 | descriptive title(+) | 0;2 | FREE TEXT | | | Full title (textual description, mixed case) representing a semantical
class. |
| 2 | class contents | 1;0 | WORD-PROCESSING | | | Textual description of the semantical class containing (as a minimum) the
semantical types included within the semantical class. |
| 3 | associated coding systems | 2;0 | MULTIPLE | 757.113 | | This multiple field contains all of the classification systems (i.e., ICD,
CPT, DSM) which have terms included in this semantical class. |