Terminology Module Incubator
0.1.0 - STU 1 International flag

Terminology Module Incubator, published by HL7 International / Terminology Infrastructure. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/txmodule-incubator/ and changes regularly. See the Directory of published versions

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Terminology Module Incubator

Official URL: http://hl7.org/fhir/uv/txmodule-incubator/ImplementationGuide/hl7.fhir.uv.txmodule-incubator Version: 0.1.0
IG Standards status: Trial-use Maturity Level: 3 Computable Name: TMIncubator

Introduction

This Additional Resources Incubator Implementation Guide (IG) defines FHIR resources that require additional review and enhancement before becoming normative content and included in a future version of the FHIR specification. We welcome and encourage all feedback on this content.

Terminology Service Module

The Terminology Service Module in the core FHIR specification will be extended to include a description of how to maintain a closure table.

Operations

Closure Table Maintenance

This operation provides support for ongoing maintenance of a client-side transitive closure table based on server-side terminological logic. For details of how this is used, see Maintaining a Closure Table

Finding codes based on supplied properties

Given a set of properties (and text), return one or more possible matching codes

This operation takes a set of properties, and examines the code system looking for codes in the code system that match a set of known properties.

When looking for matches, there are 3 possible types of match:

  • a complete match - a code that represents all the provided properties correctly
  • a partial match - a code that represents some of the provided properties correctly, and not others
  • a possible match - a code that may represent the provided properties closely, but may capture less or more precise information for some of the properties

The $find-matches operation can be called in one of 2 modes:

  • By a human, looking for the best match for a set of properties. In this mode, the server returns a list of complete, possible or partial matches (possibly with comments), so that the user can choose (or not) the most appropriate code
  • By a machine (typically in a system interface performing a transformation). In this mode, the server returns only a list of complete and partial matches, but no possible matches. The machine can choose a code from the list (or not) based on what properties are not coded

These modes are differentiated by the 'exact' parameter, so the client can indicate whether it only wants exact matches (including partial matches) or whether potential matches based on text matching are desired

The find-matches operation is still preliminary. The interface can be expected to change as more experience is gained from implementations.

Cross Version Analysis

Dependency Table

IGPackageFHIRComment
.. Terminology Module Incubatorhl7.fhir.uv.txmodule-incubator#0.1.0R5
... HL7 Terminology (THO)hl7.terminology.r5#7.1.0R5Automatically added as a dependency - all IGs depend on HL7 Terminology
... FHIR Extensions Packhl7.fhir.uv.extensions.r5#5.3.0R5Automatically added as a dependency - all IGs depend on the HL7 Extension Pack
... FHIR Tooling Extensions IGhl7.fhir.uv.tools.r5#1.1.2R5for example references

Package hl7.fhir.uv.extensions.r5#5.3.0

This IG defines the global extensions - the ones defined for everyone. These extensions are always in scope wherever FHIR is being used (built Sat, May 16, 2026 18:32+1000+10:00)

Package hl7.fhir.uv.tools.r5#1.1.2

This IG defines the extensions that the tools use internally. Some of these extensions are content that are being evaluated for elevation into the main spec, and others are tooling concerns (built Tue, Mar 24, 2026 11:13+1100+11:00)

Global Profiles Table

There are no Global profiles defined

IP Statements

No use of external IP