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Extension: AllergyIntolerance Certainty

Context of Use: Use on Element ID AllergyIntolerance.reaction

Definition

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.

Extension Content

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Summary

Name	Flags	Card.	Type	Description & Constraints
AICertainty		0..1	CodeableConcept	URL = http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty AICertainty: Statement about the degree of clinical certainty that the specific substance was the cause of the manifestation in this reaction event. Binding: AllergyIntoleranceCertainty (extensible): Statement about the degree of clinical certainty that a specific substance was the cause of the manifestation in a reaction event. Use on Element ID AllergyIntolerance.reaction
Documentation for this format

Full Structure

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	Extension	URL = http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty AICertainty: 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..1	uri	"http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty"
value[x]		1..1	CodeableConcept	Value of extension Binding: AllergyIntoleranceCertainty (extensible): Statement about the degree of clinical certainty that a specific substance was the cause of the manifestation in a reaction event.
Documentation for this format

XML Template

<!-- AICertainty -->

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

JSON Template

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

Summary

Name	Flags	Card.	Type	Description & Constraints
AICertainty		0..1	CodeableConcept	URL = http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty AICertainty: Statement about the degree of clinical certainty that the specific substance was the cause of the manifestation in this reaction event. Binding: AllergyIntoleranceCertainty (extensible): Statement about the degree of clinical certainty that a specific substance was the cause of the manifestation in a reaction event. Use on Element ID AllergyIntolerance.reaction
Documentation for this format

Full Structure

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	Extension	URL = http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty AICertainty: 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..1	uri	"http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty"
value[x]		1..1	CodeableConcept	Value of extension Binding: AllergyIntoleranceCertainty (extensible): Statement about the degree of clinical certainty that a specific substance was the cause of the manifestation in a reaction event.
Documentation for this format

XML Template

<!-- AICertainty -->

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

JSON Template

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

Constraints

• ele-1: All FHIR elements must have a @value or children (xpath: hasValue() or (children().count() > id.count()))
• ext-1: Must have either extensions or value[x], not both (xpath: extension.exists() != value.exists())
• ele-1: On Extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension: hasValue() or (children().count() > id.count()))
• ext-1: On Extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension: extension.exists() != value.exists())
• ele-1: On Extension.value[x]: All FHIR elements must have a @value or children (xpath on Extension.value[x]: hasValue() or (children().count() > id.count()))

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