# HL7.AT.FHIR.REFERENCE-IG\Use Case IGs - Optional - FHIR® v5.0.0

* [**Table of Contents**](toc.md)
* [**Use Case IGs**](use-case.md)
* **Use Case IGs - Optional**

## Use Case IGs - Optional

**Note:**The content below is a representation of what this category of IG should look like, shown here as part of the HL7 Austria Reference IG.

## Optional Tabs and Their Purpose

| | | |
| :--- | :--- | :--- |
| [Terminologies] | Overview of coding systems (e.g., LOINC, SNOMED); terminology bindings used in profiles |  |
| [Technical Information] | API specifications, security and authorization recommendations, implementation-specific notes and known limitations | [Security] |
| [Examples] | FHIR resource examples illustrating key profiles and use cases; also referenced in Artifacts section |  |

