> For the complete documentation index, see [llms.txt](https://docs.snomed.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.snomed.org/snomed-international-documents/snomed-ct-glossary/t/terminology-binding.md).

# terminology binding

## terminology binding

A link between a terminology component and an information model artifact.

#### Notes

* Terminology components include SNOMED CT concepts, expressions, reference sets, and constraints.
* Information model artifacts include classes and attributes in reference models for electronic health records and communication specifications.
* *Terminology bindings* enables formal specification of rules for:
  * consistent use of SNOMED CT in an information model; and
  * transforming data to a shared model of meaning.
* There are two distinct types of *terminology binding*
  * A value set binding is a terminology binding that represents the set of permitted values that can be used to populate a coded data item.
  * A meaning binding is a terminology binding that represents the clinical meaning of a data item or collection of data items.
* *Terminology binding* can also refer to the process of creating and maintaining links between terminology components and information model artifacts.

#### Examples

* A set of coded values that may be applied to a particular attribute in an information model. The set may be expressed extensionally (by enumeration of the codes) or intensionally (by rules such as expression constraints).
* The association between a named attribute value in the information model and a specific coded value or expression.
* A rule that determines the way that a coded expression is constructed, based on multiple attribute values in the information model.

##

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