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Inferno on HealthIT.gov is for demonstration only. Not for use with is not for use with sensitive data or Protected Health Information (PHI). Data periodically removed.

Inferno on HealthIT.gov

HL7® FHIR® Testing by The Office of the National Coordinator for Health IT

Inferno on HealthIT.gov is a public service for running select FHIR conformance tests built with Inferno. This includes tests relevant to the ONC Health IT Certification Program and tests that target other popular FHIR Implementation Guides.

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ONC Health Certification Program

Evaluate a publicly accessible test server to the ONC (g)(10) Standardized API Certification Criterion using this public testing instance of Inferno.

ONC (g)(10) Standardized Test Kit

FHIR Resource Validator

Validate individual FHIR Resources to the base FHIR specification or specific FHIR Profiles

Open Validator

What is Inferno?

Open Source FHIR Testing

Inferno is an open source tool for creating, executing and sharing automated conformance tests for the FHIR Standard. Inferno on HealthIT.gov hosts several tests created with Inferno, but Inferno is designed so anyone can create and host their own tests.

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Inferno on HealthIT.gov is a public host for the (g)(10) Standardized API Test Kit, which is an approved test method for the §170.315(g)(10) criterion within the ONC Certification Program. It also contains tests for several popular FHIR Implementation Guides. Browse the Test Kit page for a list of tests that are currently available.

Create your own tests

Inferno is as flexible as the FHIR standard, and tests need to be created for each unique FHIR use case. The Inferno Framework provides tools and common approaches to testing systems for FHIR conformance. Visit the Inferno Framework Documentation Site to learn more.

Run your own Inferno Instance

Inferno makes it easy to run tests on your local machine or host a shared copy behind your firewall. Inferno tests are packaged in Test Kits, which are standalone applications tuned to Implementation Guide or certification criteria. Each Test Kit on Inferno on HealthIT.gov provides a link to its repository where you can learn how to download and run it locally.

Integrate with Inferno

Inferno's user interface is powered by an open, full-featured API to enable integration into external tools or continuous integration pipelines. Learn more in the Inferno Framework Documentation Site.

Additional Tools

Comprehensive testing solutions need more than just tests. Inferno provides additional utilities, such as Reference Applications, that can be optionally integrated alongside tests within Inferno Test Kits.

News and Updates

March 2026 Updates

The Inferno team released and deployed to Inferno on HealthIT.gov version 8.0.0 of the ONC Certification (g)(10) Standardized API Test Kit which removes support for IG versions which are no longer available for certification. As planned, testers can no longer select the following IG versions when creating ONC Certification (g)(10) Standardized API Test Kit sessions:

  • US Core 3.1.1 / USCDI v1
  • US Core 4.0.0 / USCDI v1
  • SMART App Launch 1.0.0

Additional minor updates and patches to Inferno Core and other test kits were also deployed.

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February 2026 Updates

A new version of the ONC Certification (g)(10) Standardized API Test Kit has been released fixing some minor bugs. This includes a fix to the invalid token refresh tests when using asymmetric authentication (9.12.3.06 and 9.21.5.06) that could cause systems that previously passed the (g)(10) Certifications tests to fail if they do not check that the refresh token was issued. Previously, the token refresh requests made by Inferno did not include the jwt used for authentication.

Additionally, please review upcoming updates to the (g)(10) test kit that will remove the option to test against older versions of the US Core and SMART IGs.

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