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Operation $lookup on CodeSystem Feature: TERMINOLOGY_SERVICE Since 1.7.0

The $lookup operation can be used to lookup codes of a CodeSystem.

GET [base]/CodeSystem/$lookup
GET [base]/CodeSystem/[id]/$lookup

In Parameters

NameCardinalityTypeDocumentation
code0..1codeThe code that is to be located. If a code is provided, a system must be provided.
system0..1uriThe system for the code that is to be located.
version0..1stringThe version of the system, if one was provided in the source data.
coding0..1CodingA coding to look up.
tx-resource0..*codeUsed by the Java validator.

Resolution of CodeSystem Resources

More on resolution of terminology resources can be found here.

The official documentation can be found here.