R4 Draft for Comment

This page is part of the FHIR Specification (v3.2.0: R4 Ballot 1). 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

Extension: bestpractice

FHIR Infrastructure Work Group

Maturity Level: 1

Informative

Use Context: Any

URL for this extension:

http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice

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

Mark that an invariant represents 'best practice' rule - a rule that implementers may choose to enforce at error level in some or all circumstances.

Context of Use: Use on data type: ElementDefinition.constraint

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

Summary

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	boolean, CodeableConcept	URL = http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice bestpractice: Mark that an invariant represents 'best practice' rule - a rule that implementers may choose to enforce at error level in some or all circumstances. Binding: Context of Use ValueSet (extensible) Use on data type: ElementDefinition.constraint
Documentation for this format

Full Structure

Name	Card.	Type	Description & Constraints
extension	0..1	Extension	URL = http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice bestpractice: Mark that an invariant represents 'best practice' rule - a rule that implementers may choose to enforce at error level in some or all circumstances. Use on data type: ElementDefinition.constraint
url	1..1	uri	"http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice"
value[x]	1..1	boolean, CodeableConcept	Value of extension Binding: Context of Use ValueSet (extensible)
Documentation for this format

XML Template

<!-- bestpractice -->

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice" >
  <!-- from Element: extension -->
 <value[x]><!-- 1..1 boolean|CodeableConcept Value of extension --></value[x]>
</extension>

JSON Template

{ // bestpractice
  // from Element: extension
    "extension" : [ //  sliced by value:url  in the specified order, Open ]
    "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice", // R! 
// value[x]: Value of extension. One of these 2:
    "valueBoolean" : <boolean> // R! Value of extension
    "valueCodeableConcept" : { CodeableConcept }, // R! Value of extension
  }

Summary

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	boolean, CodeableConcept	URL = http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice bestpractice: Mark that an invariant represents 'best practice' rule - a rule that implementers may choose to enforce at error level in some or all circumstances. Binding: Context of Use ValueSet (extensible) Use on data type: ElementDefinition.constraint
Documentation for this format

Full Structure

Name	Card.	Type	Description & Constraints
extension	0..1	Extension	URL = http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice bestpractice: Mark that an invariant represents 'best practice' rule - a rule that implementers may choose to enforce at error level in some or all circumstances. Use on data type: ElementDefinition.constraint
url	1..1	uri	"http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice"
value[x]	1..1	boolean, CodeableConcept	Value of extension Binding: Context of Use ValueSet (extensible)
Documentation for this format

XML Template

<!-- bestpractice -->

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice" >
  <!-- from Element: extension -->
 <value[x]><!-- 1..1 boolean|CodeableConcept Value of extension --></value[x]>
</extension>

JSON Template

{ // bestpractice
  // from Element: extension
    "extension" : [ //  sliced by value:url  in the specified order, Open ]
    "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice", // R! 
// value[x]: Value of extension. One of these 2:
    "valueBoolean" : <boolean> // R! Value of extension
    "valueCodeableConcept" : { CodeableConcept }, // 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')]))