Current Build

Extension: certainty

Patient Care Work Group Maturity Level: 1InformativeUse Context: Any

URL for this extension:

http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty

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

Statement about the degree of clinical certainty that the specific substance was the cause of the manifestation in this reaction event.

Comment:

When certainty is missing, it means no information exists (although it could be in narrative). By contrast, the unknown code is used when there is an explicit assertion that certainty is not known, such as when a patient eats a meal and it is unknown which food caused the reaction.

Context of Use: Use on Element ID AllergyIntolerance.reaction

usage info: insert a list of places where this extension is used

Extension Content

Summary

NameFlagsCard.TypeDescription & Constraintsdoco
.. certainty0..1CodeableConceptURL = http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty
certainty: Statement about the degree of clinical certainty that the specific substance was the cause of the manifestation in this reaction event.


Binding: AllergyIntoleranceCertainty (extensible)
Use on Element ID AllergyIntolerance.reaction

doco Documentation for this format

Full Structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. extension0..1ExtensionURL = http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty
certainty: Statement about the degree of clinical certainty that the specific substance was the cause of the manifestation in this reaction event.


Use on Element ID AllergyIntolerance.reaction
... extension 0..0
... url 1..1uri"http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty"
... valueCodeableConcept 0..1CodeableConceptValue of extension
Binding: AllergyIntoleranceCertainty (extensible)

doco Documentation for this format

XML Template

<!-- certainty -->doco

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty" >
  <!-- from Element: extension -->
 <valueCodeableConcept><!-- 0..1 CodeableConcept Value of extension --></valueCodeableConcept>
</extension>

JSON Template

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

Summary

NameFlagsCard.TypeDescription & Constraintsdoco
.. certainty0..1CodeableConceptURL = http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty
certainty: Statement about the degree of clinical certainty that the specific substance was the cause of the manifestation in this reaction event.


Binding: AllergyIntoleranceCertainty (extensible)
Use on Element ID AllergyIntolerance.reaction

doco Documentation for this format

Full Structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. extension0..1ExtensionURL = http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty
certainty: Statement about the degree of clinical certainty that the specific substance was the cause of the manifestation in this reaction event.


Use on Element ID AllergyIntolerance.reaction
... extension 0..0
... url 1..1uri"http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty"
... valueCodeableConcept 0..1CodeableConceptValue of extension
Binding: AllergyIntoleranceCertainty (extensible)

doco Documentation for this format

XML Template

<!-- certainty -->doco

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty" >
  <!-- from Element: extension -->
 <valueCodeableConcept><!-- 0..1 CodeableConcept Value of extension --></valueCodeableConcept>
</extension>

JSON Template

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

 

Constraints

  • ele-1: All FHIR elements must have a @value or children (xpath: @value|f:*|h:div)
  • ext-1: Must have either extensions or value[x], not both (xpath: exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')]))