Release 4B Ballot #1

This page is part of the FHIR Specification (v4.1.0: Release 4B 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

Extension: precondition

Orders and Observations Work Group

Maturity Level: 1

Informative

Use Context: Any

URL for this extension:

http://hl7.org/fhir/StructureDefinition/servicerequest-precondition

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

The condition or state of the patient, prior or during the diagnostic procedure or test, for example, fasting, at-rest, or post-operative. This captures circumstances that may influence the measured value and have bearing on the interpretation of the result.

Context of Use: Use on Element ID ServiceRequest

Summary

Name	Flags	Card.	Type	Description & Constraints
precondition		0..*	CodeableConcept	URL = http://hl7.org/fhir/StructureDefinition/servicerequest-precondition precondition: The condition or state of the patient, prior or during the diagnostic procedure or test, for example, fasting, at-rest, or post-operative. This captures circumstances that may influence the measured value and have bearing on the interpretation of the result. Use on Element ID ServiceRequest
Documentation for this format

Full Structure

Name	Card.	Type	Description & Constraints
extension	0..*	Extension	URL = http://hl7.org/fhir/StructureDefinition/servicerequest-precondition precondition: The condition or state of the patient, prior or during the diagnostic procedure or test, for example, fasting, at-rest, or post-operative. This captures circumstances that may influence the measured value and have bearing on the interpretation of the result. Use on Element ID ServiceRequest
extension	0..0
url	1..1	uri	"http://hl7.org/fhir/StructureDefinition/servicerequest-precondition"
value[x]	1..1	CodeableConcept	Value of extension
Documentation for this format

XML Template

<!-- precondition -->

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

JSON Template

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

Summary

Name	Flags	Card.	Type	Description & Constraints
precondition		0..*	CodeableConcept	URL = http://hl7.org/fhir/StructureDefinition/servicerequest-precondition precondition: The condition or state of the patient, prior or during the diagnostic procedure or test, for example, fasting, at-rest, or post-operative. This captures circumstances that may influence the measured value and have bearing on the interpretation of the result. Use on Element ID ServiceRequest
Documentation for this format

Full Structure

Name	Card.	Type	Description & Constraints
extension	0..*	Extension	URL = http://hl7.org/fhir/StructureDefinition/servicerequest-precondition precondition: The condition or state of the patient, prior or during the diagnostic procedure or test, for example, fasting, at-rest, or post-operative. This captures circumstances that may influence the measured value and have bearing on the interpretation of the result. Use on Element ID ServiceRequest
extension	0..0
url	1..1	uri	"http://hl7.org/fhir/StructureDefinition/servicerequest-precondition"
value[x]	1..1	CodeableConcept	Value of extension
Documentation for this format

XML Template

<!-- precondition -->

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

JSON Template

{ // precondition
  // from Element: extension
    "extension" : [ //  sliced by value:url  in the specified order, Open ]
    "url" : "http://hl7.org/fhir/StructureDefinition/servicerequest-precondition", // 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)