This page is part of the FHIR Specification (v1.8.0: STU 3 Draft). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions

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Extension: Allele frequency

URL for this extension:

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

Status: draft. Extension maintained by: Health Level Seven International (Clinical Genomics)

A physical quality which inheres to the allele by virtue of the number instances of the allele within a population. LONIC Code: (81258-6).

Context of Use: Use on element: Observation

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

Extension Content

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Summary

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	decimal	URL = http://hl7.org/fhir/StructureDefinition/observation-geneticsAllelicFrequency Allele frequency: A physical quality which inheres to the allele by virtue of the number instances of the allele within a population. LONIC Code: ([81258-6](http://loinc.org/81258-6)). Use on element: Observation
Documentation for this format

Fulle Structure

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	Extension	URL = http://hl7.org/fhir/StructureDefinition/observation-geneticsAllelicFrequency Allele frequency: A physical quality which inheres to the allele by virtue of the number instances of the allele within a population. LONIC Code: ([81258-6](http://loinc.org/81258-6)). Use on element: Observation
extension		0..0
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/observation-geneticsAllelicFrequency"
valueDecimal		1..1	decimal	Value of extension
Documentation for this format

XML Template

<!-- Allele frequency -->

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/observation-geneticsAllelicFrequency" >
  <!-- from Element: extension -->
 <valueDecimal value="[decimal]"/><!-- 1..1 Value of extension -->
</extension>

JSON Template

{ // Allele frequency
  // from Element: extension
    "url" : "http://hl7.org/fhir/StructureDefinition/observation-geneticsAllelicFrequency", // R! 
    "valueDecimal" : <decimal> // R! Value of extension
  }

Summary

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	decimal	URL = http://hl7.org/fhir/StructureDefinition/observation-geneticsAllelicFrequency Allele frequency: A physical quality which inheres to the allele by virtue of the number instances of the allele within a population. LONIC Code: ([81258-6](http://loinc.org/81258-6)). Use on element: Observation
Documentation for this format

Full Structure

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	Extension	URL = http://hl7.org/fhir/StructureDefinition/observation-geneticsAllelicFrequency Allele frequency: A physical quality which inheres to the allele by virtue of the number instances of the allele within a population. LONIC Code: ([81258-6](http://loinc.org/81258-6)). Use on element: Observation
extension		0..0
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/observation-geneticsAllelicFrequency"
valueDecimal		1..1	decimal	Value of extension
Documentation for this format

XML Template

<!-- Allele frequency -->

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/observation-geneticsAllelicFrequency" >
  <!-- from Element: extension -->
 <valueDecimal value="[decimal]"/><!-- 1..1 Value of extension -->
</extension>

JSON Template

{ // Allele frequency
  // from Element: extension
    "url" : "http://hl7.org/fhir/StructureDefinition/observation-geneticsAllelicFrequency", // R! 
    "valueDecimal" : <decimal> // R! 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')]))