> 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/role-group.md).

# role group

## role group

**This is a synonym for relationship group.**

## relationship group

**This is used to refer to a group of relationships representing an attribute group.**

## attribute group

An association between a set of attribute value pairs that causes them to be considered together within a concept definition or postcoordinated expression.

#### Notes

* When an *attribute group* is represented as a group of defining relationships it is usually referred to as a *relationship group.*

#### Example

* [| Cholecystectomy with exploration of common duct|](http://snomed.info/id/45993005) has two different attribute groups:
  * [| Method|](http://snomed.info/id/260686004) [| Exploration - action|](http://snomed.info/id/281615006) *is grouped with* [| Procedure site - Direct (attribute)|](http://snomed.org/fictid#) [| Common bile duct structure|](http://snomed.info/id/79741001)
  * [| Method|](http://snomed.info/id/260686004) [| Excision - action|](http://snomed.info/id/129304002) *is grouped with* [| Procedure site - Direct (attribute)|](http://snomed.org/fictid#) [| Gallbladder structure|](http://snomed.info/id/28231008)
* If these attributes were not grouped, this procedure would incorrectly classified as a subtype of [| Excision of common bile duct|](http://snomed.info/id/6402000) .

## Alternatives

* **Relationship group**
* **Role group**

##

<a href="https://docs.google.com/forms/d/e/1FAIpQLScTmbZIf0UEQwYDkY27EEWBkaiYkHSbR0_9DmFrMLXoQLyL7Q/viewform?usp=pp_url&#x26;entry.1767247133=SNOMED+Glossary&#x26;entry.670899847=role%20group" class="button primary">Provide Feedback</a>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.snomed.org/snomed-international-documents/snomed-ct-glossary/r/role-group.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.