> 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/c/concept/concept-model-domain.md).

# concept model domain

## concept model domain

A set of concepts which the concept model permits to be defined or refined, using a particular set of attributes and ranges.

#### Notes

* A domain to which an attribute can be applied typically includes concepts in one or more branches of the subtype hierarchy.

#### Examples

* Section Procedure Attributes Summary of the SNOMED CT Editorial Guide defines the *domain* , attributes and ranges for | Procedure| .
* The [| Procedure|](http://snomed.info/id/71388002) *domain* is defined as follows:

<< [71388002 |Procedure|](http://snomed.info/id/71388002) /\* the concept "Procedure" or any of its subtypes \*/

* The table row below shows how [| Procedure site|](http://snomed.info/id/363704007) , one of the many attributes applicable to the [| Procedure|](http://snomed.info/id/71388002) domain, is specified together with its range of permitted values.

| **Attribute**                               | **Grouped**    | **Cardinality**                                 | **In Group Cardinality** | **Range Constraint**                  |
| ------------------------------------------- | -------------- | ----------------------------------------------- | ------------------------ | ------------------------------------- |
| \[ 363704007                                | Procedure site | ]\(<http://snomed.info/id/363704007> "363704007 | Procedure site           | ")                                    |
| 1                                           | 0..\*          | 0..\*                                           | << \[ 442083009          | Anatomical or acquired body structure |
| /\* "Anatomical or acquired body structure" |                |                                                 |                          |                                       |
| or any of its subtypes. \*/                 |                |                                                 |                          |                                       |

## Alternatives

* **Domain**

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