# Query Concept Maps

 This transaction allows a PoS, or any OHIE component, to access terminological information in the terminology service to query for Concept Maps.  A typical example would be to request the set of Concept Maps whose target Code System is SNOMED CT. Mapping is frequently required when patient data is collected using Concepts/Codes from one Code System but the data must be reported or aggregated, say for decision support, in a different Code System. The set of such associated Concepts, usually for a specific use-case, are stored in the Terminology Service in a FHIR Resource called a ConceptMap.

Both external systems and systems inside the HIE may perform this transaction directly with the TS. The sequence diagram below shows the steps that occur for a system using this transaction.   

1. Query Concept Maps: What Concept Maps have a map target of 'SNOMED CT''?

| **Workflow Maturity**         | <p><img src="https://lh5.googleusercontent.com/Vp6XBRGu-U_Dmd5EKNpCZvEEum0CxOcHOj9NgHh8UMMNLMlXHmLcUE_YWueDRr4uqWLzpPfzSBLJ2k33XQIelLypjQ4wyrD17-t33GtLa8fFxW9AYDvXhiJmBl4VaLgKDg" alt=""></p><p>   <strong>Mature</strong></p> | <p></p><ul><li><strong>One or more OpenHIE implementations of this workflow exist  in one or more countries</strong></li><li><strong>Workflow is defined and ARB approved</strong></li><li><strong>Workflow is supported by mature standards</strong></li></ul> |
| ----------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Standards\*                   |                                                                                                                                                                                                                                 | <p></p><ul><li>One or more OpenHIE implementations of this workflow exist  in one or more countries</li><li>Workflow is defined and ARB approved</li><li>Workflow is supported by mature standards</li></ul>                                                    |
| Assumptions and Prerequisites |                                                                                                                                                                                                                                 | The required Concept Maps have been preloaded into the Terminology Service.                                                                                                                                                                                     |
| Actors                        |                                                                                                                                                                                                                                 | <p></p><ul><li>PoS - The point-of-service system  or other HIE component that is that is querying for Concept Maps.   </li><li>TS - Stores the curated, official version of the Concept Maps for the health system.</li></ul>                                   |

## Interaction Description&#x20;

The following is a description of the interaction steps.

![](https://lh4.googleusercontent.com/lMBBRqFL2VgXeCrFBOPH-K-sDVo4hHqwW7gP7wxjyYAwbDHAITnWIGb3eddt6CQDVPCGPq3V56kCGENMV17f0WjgWxJ7R-XWpAX_l2nKoEGMr-_GDoPEd927PHERFR27QQ)

| # | Interaction                | Data                                                                                                                                           | Transaction Options      |
| - | -------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------ |
| 1 | Query Concept Map request  | <p>The Concept Map search request is triggered by a PoS or other HIE component.</p><p>Input: A set of FHIR search parameters.</p>              | FHIR ConceptMap Resource |
| 2 | Query Concept Map response | <p>The response is sent back to the requesting system. </p><p>Output: a Bundle of ConceptMap Resources that satisfy the search parameters.</p> | FHIR ConceptMap Resource |

##


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# Agent Instructions: 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:

```
GET https://guides.ohie.org/arch-spec/main-1/introduction/terminology-service-workflow/query-concept-maps.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.