FHIR Extensions Pack
5.2.0-ballot - 5.2.0 Ballot - September 2024) International flag

This page is part of the FHIR Core Extensions Registry (v5.2.0-ballot: Release 5.2) based on FHIR (HL7® FHIR® Standard) v5.0.0. The current version which supersedes this version is 5.1.0. For a full list of available versions, see the Directory of published versions

Extension: Is Selective

Official URL: http://hl7.org/fhir/StructureDefinition/cqf-isSelective Version: 5.2.0-ballot
Standards status: Trial-use Maturity Level: 3 Responsible: HL7 International / Clinical Decision Support Computable Name: IsSelective
Other Identifiers: OID:2.16.840.1.113883.4.642.5.1668

Allows a given data requirement to be identified as “selective”, meaning that it can be used as an additive criteria to filter a population. A selective data requirement is guaranteed to define a subset (not necessarily proper) of the initial population of an artifact. If multiple data requirements are marked selective, they all apply (i.e. AND semantics).

This extension is useful for helping implementing systems determine which data requirements are expected to be most selective of the target population. A common use case is to identify a subset of the data requirements for an artifact as “selective”, meaning that they can be used as an initial filter to establish the overall set of data. For example, the selective requirements can be used to construct an initial query or queries for data, with the non-selective requirements used for subsequent filtering on the resulting data. Although this extension may be used by artifact authors as a way to indicate expected selectivity of a data requirement, it will more typically be used by implementers and downstream packaging repositories to indicate selectivity of a data requirement given known data heuristics in particular datasets.

Context of Use

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

  • Element ID DataRequirement

Usage info

Usage:

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

Changes since version 1.0.0:

  • No changes

    • Formal Views of Extension Content

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

    This structure is derived from Extension

    Summary

    Simple Extension of type boolean: Allows a given data requirement to be identified as "selective", meaning that it can be used as an additive criteria to filter a population. A selective data requirement is guaranteed to define a subset (not necessarily proper) of the initial population of an artifact. If multiple data requirements are marked selective, they all apply (i.e. AND semantics).

    Maturity: 3

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..1 Extension Primary criteria?
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/cqf-isSelective"
    ... value[x] 1..1 boolean Value of extension

    doco Documentation for this format
    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..1 Extension Primary criteria?
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..* Extension Additional content defined by implementations
    Slice: Unordered, Open by value:url
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/cqf-isSelective"

    doco Documentation for this format

    This structure is derived from Extension

    Summary

    Simple Extension of type boolean: Allows a given data requirement to be identified as "selective", meaning that it can be used as an additive criteria to filter a population. A selective data requirement is guaranteed to define a subset (not necessarily proper) of the initial population of an artifact. If multiple data requirements are marked selective, they all apply (i.e. AND semantics).

    Maturity: 3

    Differential View

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..1 Extension Primary criteria?
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/cqf-isSelective"
    ... value[x] 1..1 boolean Value of extension

    doco Documentation for this format

    Snapshot View

    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..1 Extension Primary criteria?
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..* Extension Additional content defined by implementations
    Slice: Unordered, Open by value:url
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/cqf-isSelective"

    doco Documentation for this format

     

    Other representations of profile: CSV, Excel, Schematron

    Constraints

    IdGradePath(s)DetailsRequirements
    ele-1error**ALL** elementsAll FHIR elements must have a @value or children
    : hasValue() or (children().count() > id.count())
    ext-1error**ALL** extensionsMust have either extensions or value[x], not both
    : extension.exists() != value.exists()

    Search Parameters for this Extension

    (none found)