Cross-Version Extension for EvidenceVariable.characteristic.definition[x] in R4

Context of Use

This extension may be used in the following contexts:

• element EvidenceVariable.characteristic (For version R5)
• extension http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic
• element EvidenceVariable.characteristic (For version R4B)
• extension http://hl7.org/fhir/4.3/StructureDefinition/extension-EvidenceVariable.characteristic
• extension http://hl7.org/fhir/4.0/StructureDefinition/extension-EvidenceVariable.characteristic
• extension http://hl7.org/fhir/4.0/StructureDefinition/extension-EvidenceVariable.characteristic

Name	Flags	Card.	Type	Description & Constraints
Extension		1..1	Extension	What code or expression defines members?
extension		..0
value[x]		1..
valueReference			Reference(Group)
valueCanonical			canonical(ActivityDefinition)
valueCodeableConcept			CodeableConcept
valueExpression			Expression
valueDataRequirement			DataRequirement
valueTriggerDefinition			TriggerDefinition
url				"http://hl7.org/fhir/4.0/StructureDefinition/extension-EvidenceVariable.characteristic.definition[x]"
Documentation for this format

{
  "resourceType" : "StructureDefinition",
  "id" : "xv-r4-evv.cha.definition[x]",
  "url" : "http://hl7.org/fhir/4.0/StructureDefinition/extension-EvidenceVariable.characteristic.definition[x]",
  "name" : "XVerExtensionEvidenceVariable.characteristic.definition[x]R4",
  "title" : "Cross-Version Extension for EvidenceVariable.characteristic.definition[x] in R4",
  "status" : "active",
  "experimental" : false,
  "publisher" : "Health Level Seven International (Clinical Decision Support)",
  "contact" : [{
    "telecom" : [{
      "system" : "url",
      "value" : "http://hl7.org/fhir"
    }]
  },
  {
    "telecom" : [{
      "system" : "url",
      "value" : "http://www.hl7.org/Special/committees/dss/index.cfm"
    }]
  }],
  "description" : "Cross-Version Extension for EvidenceVariable.characteristic.definition[x]. Valid in versions R2, R3, R4B, R5\r\n\r\nThis is a valid cross-version extension because it's counted as a new element",
  "jurisdiction" : [{
    "coding" : [{
      "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
      "code" : "001"
    }]
  }],
  "fhirVersion" : "5.0.0",
  "kind" : "complex-type",
  "abstract" : false,
  "context" : [{
    "extension" : [{
      "extension" : [{
        "url" : "startFhirVersion",
        "valueCode" : "5.0"
      },
      {
        "url" : "endFhirVersion",
        "valueCode" : "5.0"
      }],
      "url" : "http://hl7.org/fhir/StructureDefinition/version-specific-use"
    }],
    "type" : "element",
    "expression" : "EvidenceVariable.characteristic"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic"
  },
  {
    "extension" : [{
      "extension" : [{
        "url" : "startFhirVersion",
        "valueCode" : "4.3"
      },
      {
        "url" : "endFhirVersion",
        "valueCode" : "4.3"
      }],
      "url" : "http://hl7.org/fhir/StructureDefinition/version-specific-use"
    }],
    "type" : "element",
    "expression" : "EvidenceVariable.characteristic"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/4.3/StructureDefinition/extension-EvidenceVariable.characteristic"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/4.0/StructureDefinition/extension-EvidenceVariable.characteristic"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/4.0/StructureDefinition/extension-EvidenceVariable.characteristic"
  }],
  "type" : "Extension",
  "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation" : "constraint",
  "differential" : {
    "element" : [{
      "path" : "Extension",
      "short" : "What code or expression defines members?",
      "definition" : "Define members of the evidence element using Codes (such as condition, medication, or observation), Expressions ( using an expression language such as FHIRPath or CQL) or DataRequirements (such as Diabetes diagnosis onset in the last year).",
      "requirements" : "Need to be able to define members in simple codes when the membership aligns well with terminology, with common criteria such as observations in a value set or lab tests within a year, or with expression language to support criteria that do not fit in the above.",
      "min" : 1,
      "max" : "1",
      "isModifier" : false
    },
    {
      "path" : "Extension.extension",
      "max" : "0"
    },
    {
      "path" : "Extension.value[x]",
      "min" : 1,
      "type" : [{
        "code" : "Reference",
        "targetProfile" : ["http://hl7.org/fhir/StructureDefinition/Group"]
      },
      {
        "code" : "canonical",
        "targetProfile" : ["http://hl7.org/fhir/StructureDefinition/ActivityDefinition"]
      },
      {
        "code" : "CodeableConcept"
      },
      {
        "code" : "Expression"
      },
      {
        "code" : "DataRequirement"
      },
      {
        "code" : "TriggerDefinition"
      }]
    },
    {
      "path" : "Extension.url",
      "fixedUri" : "http://hl7.org/fhir/4.0/StructureDefinition/extension-EvidenceVariable.characteristic.definition[x]"
    }]
  }
}