# Change Log - Carequality Healthcare Directory ImplementationGuide v1.9.0

* [**Table of Contents**](toc.md)
* **Change Log**

## Change Log

### Change Management Overview

Sequoia maintains change control for all assets related to this project, including to this document, the software described by this document, and the associated operational environments (people, processes, and systems). The following sections document the information needed by implementers in terms of change management. Certain information, such as actual environmental access base URLs is confidential and not documented here.

### Implementation Guide Changes

* Date: 12/22/2025
  * Version: 1.9.0
  * Author: Rick Geimer
  * Summary: * Updated to version 1.9.0 of the Sequoia base IG

* Date: 08/20/2025
  * Version: 1.8.0
  * Author: Diana Wright
  * Summary: Updated to version 1.8.0 of the Sequoia base IG
* Date: 08/06/2025
  * Version: 1.7.0
  * Author: Diana Wright
  * Summary: Updated to version 1.7.0 of the Sequoia base IG
* Date: 06/25/2025
  * Version: 1.6.2
  * Author: Diana Wright
  * Summary: Added descriptions to CQ profiles and examples.
* Date: 06/11/2025
  * Version: 1.6.1
  * Author: Diana Wright
  * Summary: * Updated binding on Carequality Organization.address:united-states-address.state from extensible to required.
* Updated IG version: 1.6.1 

* Date: 06/10/2025
  * Version: 1.6.0
  * Author: Diana Wright
  * Summary: Updated to version 1.6.0 of the Sequoia base IG
* Date: 05/13/2025
  * Version: 1.5.0
  * Author: Diana Wright
  * Summary: Updated to version 1.5.0 of the Sequoia base IG
* Date: 02/26/2025
  * Version: 1.4.0
  * Author: Diana Wright
  * Summary: Updated to version 1.4.0 of the Sequoia base IG
* Date: 01/28/2025
  * Version: 1.3.0
  * Author: Diana Wright
  * Summary: Updated to version 1.3.0 of the Sequoia base IG
* Date: 12/23/2024
  * Version: 1.2.0
  * Author: Rick Geimer
  * Summary: Updated to version 1.2.0 of the Sequoia base IG
* Date: 11/27/2024
  * Version: 1.1.0
  * Author: Diana Wright
  * Summary: Updated to version 1.1.0 of the Sequoia base IG
* Date: 08/30/2024
  * Version: 1.0.10
  * Author: Rick Geimer
  * Summary: Updated to version 1.0.10 of the Sequoia base IG
* Date: 07/22/2024
  * Version: 1.0.9
  * Author: Rick Geimer
  * Summary: * Updated to version 1.0.9 of the Sequoia base IG
* Fixed case issue with slice names
* Changed IG source format to FHIR ShortHand (FSH)

* Date: 05/20/2024
  * Version: 1.0.8
  * Author: Rick Geimer
  * Summary: Updated to version 1.0.8 of the Sequoia base IG
* Date: 04/25/2024
  * Version: 1.0.7
  * Author: Rick Geimer
  * Summary: Updated to version 1.0.7 of the Sequoia base IG
* Date: 04/08/2024
  * Version: 1.0.6
  * Author: Rick Geimer
  * Summary: Updated to version 1.0.6 of the Sequoia base IG
* Date: 03/21/2024
  * Version: 1.0.5
  * Author: Rick Geimer
  * Summary: Updated to version 1.0.5 of the Sequoia base IG
* Date: 02/07/2024
  * Version: 1.0.4
  * Author: Rick Geimer
  * Summary: Updated to version 1.0.4 of the Sequoia base IG
* Date: 12/13/2023
  * Version: 1.0.3
  * Author: Rick Geimer
  * Summary: Changed the binding on the PurposesOfUse extension to required, since it was changed to preferred in the Sequoia base IG to allow the RCE to use a different value set
* Date: 11/03/2023
  * Version: 1.0.2
  * Author: Rick Geimer
  * Summary: Changed cardinality for Sequoia Endpoint – Endpoint.extension.Transaction from 0..1 to 1..1
* Date: 07/21/2023
  * Version: 1.0.1
  * Author: Rick Geimer
  * Summary: * Changed cardinality for Sequoia Organization – Organization.identifier:AAID from 0..1 to 0..*
* Changed cardinality for Sequoia Endpoint – Endpoint.identifier:AAID from 0..1 to 0..*

* Date: 06/30/2023
  * Version: 1.0.0
  * Author: Rick Geimer
  * Summary: Initial Release

