FHIR Extensions Pack
5.2.0 - February 2025 International flag

This page is part of the FHIR Core Extensions Registry (v5.2.0: Release 5.2) based on FHIR (HL7® FHIR® Standard) v5.0.0. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

Extension: Observation Delta

Official URL: http://hl7.org/fhir/StructureDefinition/observation-delta Version: 5.2.0
Standards status: Trial-use Maturity Level: 3 Responsible: HL7 International / Orders and Observations Computable Name: ObsDelta
Other Identifiers: OID:2.16.840.1.113883.4.642.5.1477

The qualitative change in the value relative to the previous measurement. Usually only recorded if the change is clinically significant.

Context of Use

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

Usage info

Usage:

Changes since version 1.0.0:

  • The resource metadata has changed (publisher)

    • 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 CodeableConcept: The qualitative change in the value relative to the previous measurement. Usually only recorded if the change is clinically significant.

    Maturity: 3

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..1 Extension Qualitative change or trend in the measurement
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/observation-delta"
    ... value[x] 1..1 CodeableConcept Value of extension

    doco Documentation for this format
    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..1 Extension Qualitative change or trend in the measurement
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/observation-delta"

    doco Documentation for this format

    This structure is derived from Extension

    Summary

    Simple Extension of type CodeableConcept: The qualitative change in the value relative to the previous measurement. Usually only recorded if the change is clinically significant.

    Maturity: 3

    Differential View

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..1 Extension Qualitative change or trend in the measurement
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/observation-delta"
    ... value[x] 1..1 CodeableConcept Value of extension

    doco Documentation for this format

    Snapshot View

    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..1 Extension Qualitative change or trend in the measurement
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/observation-delta"

    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)