Release 4B

This page is part of the FHIR Specification (v4.3.0: R4B - STU). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R4B R4 R3 R2

Extension: delta

Orders and Observations Work Group Maturity Level: 1 Informative Use Context: Any

URL for this extension:

http://hl7.org/fhir/StructureDefinition/observation-delta

Status: draft. Extension maintained by: Health Level Seven, Inc. - OO WG

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

Context of Use: Use on Element ID Observation

Summary

Name	Flags	Card.	Type	Description & Constraints doco
.. delta	0..1	CodeableConcept	URL = http://hl7.org/fhir/StructureDefinition/observation-delta delta: The qualitative change in the value relative to the previous measurement. Usually only recorded if the change is clinically significant. Use on Element ID Observation
doco Documentation for this format

Full Structure

Name	Flags	Card.	Type
.. extension	0..1	Extension	URL = http://hl7.org/fhir/StructureDefinition/observation-delta delta: The qualitative change in the value relative to the previous measurement. Usually only recorded if the change is clinically significant. Use on Element ID Observation
... 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

XML Template

<!-- delta -->doco 
<extension xmlns="http://hl7.org/fhir"
 url="http://hl7.org/fhir/StructureDefinition/observation-delta" >
 <!-- from Element: extension -->
 <valueCodeableConcept><!-- ?? 1..1 CodeableConcept  Value of extension --></valueCodeableConcept>
</extension>

JSON Template

{ // delta
 // from Element: extension
 "extension" : [ //  sliced by value:url in the specified order, Open ]
 "url" : "http://hl7.org/fhir/StructureDefinition/observation-delta", // R! 
 "valueCodeableConcept" : { CodeableConcept  } // C? R! Value of extension
 }

Summary

Name	Flags	Card.	Type	Description & Constraints doco
.. delta	0..1	CodeableConcept	URL = http://hl7.org/fhir/StructureDefinition/observation-delta delta: The qualitative change in the value relative to the previous measurement. Usually only recorded if the change is clinically significant. Use on Element ID Observation
doco Documentation for this format

Full Structure

Name	Flags	Card.	Type
.. extension	0..1	Extension	URL = http://hl7.org/fhir/StructureDefinition/observation-delta delta: The qualitative change in the value relative to the previous measurement. Usually only recorded if the change is clinically significant. Use on Element ID Observation
... 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

XML Template

<!-- delta -->doco 
<extension xmlns="http://hl7.org/fhir"
 url="http://hl7.org/fhir/StructureDefinition/observation-delta" >
 <!-- from Element: extension -->
 <valueCodeableConcept><!-- ?? 1..1 CodeableConcept  Value of extension --></valueCodeableConcept>
</extension>

JSON Template

{ // delta
 // from Element: extension
 "extension" : [ //  sliced by value:url in the specified order, Open ]
 "url" : "http://hl7.org/fhir/StructureDefinition/observation-delta", // R! 
 "valueCodeableConcept" : { CodeableConcept  } // C? R! Value of extension
 }

Constraints

ele-1: All FHIR elements must have a @value or children unless an empty Parameters resource (xpath: @value|f:*|h:div|self::f:Parameters)
ext-1: Must have either extensions or value[x], not both (xpath: exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')]))
ele-1: On Extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension: @value|f:*|h:div)
ext-1: On Extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]))
ele-1: On Extension.value[x]: All FHIR elements must have a @value or children (xpath on Extension.value[x]: @value|f:*|h:div)