This page is part of the FHIR Core Extensions Registry (v0.1.0: Releases Draft) based on FHIR v5.0.0. . For a full list of available versions, see the Directory of published versions

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Extension: Characteristic Expression

Official URL: http://hl7.org/fhir/StructureDefinition/characteristicExpression				Version: 0.1.0
Standards status: Trial-use			Maturity Level: 1	Computable Name: CharacteristicExpression

An expression that defines the criteria for group membership. This extension can only be used on a Group resource with a membership of definitional. When this expression is used, the Group resource cannot have any characteristic elements; this mechanism is exclusive with characteristics. The result of the expression SHALL be boolean-valued. The expression SHALL be parameterized with a %context variable that represents the subject being tested for membership. If evaluation of the expression results in true, the subject is considered a member of the group.

Context of Use

This extension may be used on the following element(s):

• Element ID Group

Usage info

Usage:

• This Extension is not used by any profiles in this Implementation Guide

Formal Views of Extension Content

Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.

 

Other representations of profile: CSV, Excel, Schematron

Constraints

Id	Grade	Path(s)	Details	Requirements
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())

Search Parameters for this Extension

(none found)

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