Glossary
For purposes of this document, the following terms are used:
| Term | Description |
|---|---|
| Standardized Vocabularies | Contains a system of Vocabularies, Classifications, Domains and Concepts all consolidated into a common format and stored in a set of CDM tables. |
| Vocabulary | A set of codes or concepts, including if available relationships amongst them, including if available a hierarchy, ontology or taxonomy of the concepts. Many vocabularies are adopted from national or international organizations, such as ICD-9-CM, SNOMED-CT, RxNorm, Read. |
| Terminology | Similar to vocabulary and often used synonymously, but not used in this document. |
| Coding scheme | Similar to vocabulary and often used synonymously, but not used in this document. |
| Classification | A hierarchical system of concepts and concept relationships that defines semantically useful classes, like chemical structures for drugs. |
| Concept | Basic unit of information defined in each Vocabulary. |
| Domain | A clinical semantic category, like Drug, Condition, Procedure defined for all Concepts in the Standardized Vocabularies. |
| Concept Class | An attribute of a concept characterizing it's classification within a Vocabulary. The difference to the classification is that a concept class is a single attribute without any hierarchical structure. |
