> 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/r/range.md).

# range

## range

**This is an abbreviation for concept model range.**

## concept model range

A set of values that the concept model permits to be applied to a specific attribute.

#### Notes

* The *range* of permitted values that can be applied to an attribute is formally specified using the expression constraint language.
* The *range* is typically limited to concepts that are subtypes of one concept. However, in some cases a *range* may be specified to include subtypes of several concepts or members of a specified reference set.

#### Example

* The *concept model range* for the attribute [116676008 | Associated morphology|](http://snomed.info/id/116676008) is limited the concept [49755003 | Morphologically abnormal structure|](http://snomed.info/id/49755003) and its subtypes. This is specified by the following constraint:

<< [49755003 |Morphologically abnormal structure|](http://snomed.info/id/49755003)

## Alternatives

* **Range**

##

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