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What is FHIR?

FHIR is transforming interoperability in healthcare – but exactly what is it?

The FHIR for Jurisdictions Handbook

Learn from NHS Digital and HL7 Germany how to develop FHIR standards.

Simplifier Features

Get to know what is possible in Simplifier.net. An overview of free and paid features.

Simplifier Data Modeling Launch

Kickstart your team's FHIR data modeling workflow in three sessions.

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SIMPLIFIER NEWS

  • 🗳️ Building the future of FHIR, together

    Ardon Tuesday, August 25, 2026
    Earlier this year, we asked the Simplifier community how they use Simplifier, Forge, and Firely Terminal in their day-to-day FHIR work. First of all, thank you to everyone who took the time to participate.
  • ⚙️ New Simplifier.net Release 2026.4: Firely .NET SDK 6

    Ardon Wednesday, August 19, 2026
    Simplifier now runs entirely on Firely .NET SDK 6. This release brings a list of rendering improvements for your conformance resources, and consolidates our documentation in one place.
  • 🛠️ New Forge Release – Platform Upgrades and Modeling Refinements

    Ardon Wednesday, July 15, 2026
    Forge 2026.2.0 upgrades the profiling engine to .NET 10 and Firely .NET SDK 6.2.1, adds support for the suppression extension, and speeds up loading of complex profiles. Quality Control now runs solely on the current Firely validator, and the Project view's Structure Type filter has been streamlined. Note that .NET 10 may need to be installed by your IT department on managed machines.
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Resources

Resource Categories

Layout (34678)
TestScript (118)
Text (88719)
Example (72490)
ConceptMap (2436)
SearchParameter (19525)
ValueSet (46584)
MappingFile (593)
Library (242)
LogicalModel (1670)
CodeSystem (24405)
Image (24542)
DataElement (4427)
NamingSystem (2410)
Extension (22728)
Profile (41170)

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The registry.fhir.org is a central point to search for published FHIR Resources:

You can find published STU3 and R4 profiles, extensions, terminology-related and other conformance resources.

Search the FHIR Registry