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

FHIR Extensions Pack, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 5.2.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-extensions/ and changes regularly. See the Directory of published versions

Extension: Observation Delta

Official URL: http://hl7.org/fhir/StructureDefinition/observation-delta Version: 5.2.0-ballot
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):

  • Element ID Observation

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)