# Query Patient Demographic Records by Demographics Workflow (something missing)

## Overview

This transaction allows Point-of-Service (PoS) systems to query for patients that match supplied demographics. The following sequence diagram shows the steps involved.

| **Workflow Maturity**         | <p><img src="https://lh5.googleusercontent.com/Vp6XBRGu-U_Dmd5EKNpCZvEEum0CxOcHOj9NgHh8UMMNLMlXHmLcUE_YWueDRr4uqWLzpPfzSBLJ2k33XQIelLypjQ4wyrD17-t33GtLa8fFxW9AYDvXhiJmBl4VaLgKDg" alt=""></p><p> <strong>Mature</strong></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>Option 1</p><ul><li>QBP^Q22 - <a href="https://www.ihe.net/uploadedFiles/Documents/ITI/IHE_ITI_TF_Vol2a.pdf">IHE ITI-21</a></li><li>RSP^K22 - <a href="https://www.ihe.net/uploadedFiles/Documents/ITI/IHE_ITI_TF_Vol2a.pdf">IHE ITI-21</a></li></ul><p>Option 2</p><ul><li>FHIR - <a href="http://ihe.net/uploadedFiles/Documents/ITI/IHE_ITI_Suppl_PDQm_Rev1.0_PC_2014-06-06.pdf">Patient Demographics Query IHE ITI PDQm Transaction</a></li></ul> |
| Assumptions and Prerequisites |                                                                                                                                                                                                                               | The PoS system is a trusted application known by the HIE and it is registered with the interoperability layer to be able to send and receive data securely ([Common message security workflow](https://wiki.ohie.org/display/documents/Common+message+security+workflow)).                                                                                                                                                                               |
| Actors                        |                                                                                                                                                                                                                               | <ul><li>PoS - The point of care system that captures patient identifiers, is responsible for sending the identifiers to the HIE.</li><li>IL - Mediates the transactions between the PoS system and the client registry.</li><li>CR - Manages patient demographics and identifier details</li></ul>                                                                                                                                                       |