---
description: Learn about US Core IG support in Aidbox
---

# US Core IG





This page explains US Core support for zen-lang validation mode.

Since the 2405 release, using Aidbox in FHIR schema validation engine is recommended, which is incompatible with zen or Entity/Attribute options.

[Setup Aidbox with FHIR Schema validation engine](broken-reference)

## Support

US Core IG contains the following FHIR artifacts: 

* Profiles, 
* Extensions, 
* Terminology, 
* Search Parameters, 
* Operations 
* Capability Statements. 

Supported parts of US Core IG are listed on the following page:

{% content-ref url="us-core-ig-support-reference.md" %}
[us-core-ig-support-reference.md](us-core-ig-support-reference.md)
{% endcontent-ref %}