Cross-Version Extension for Measure.group.population.aggregateMethod in R5

Context of Use

This extension may be used in the following contexts:

• element Measure.group.population (For version R4B)
• extension http://hl7.org/fhir/4.3/StructureDefinition/extension-Measure.group.population
• element Measure.group.population (For version R4)
• extension http://hl7.org/fhir/4.0/StructureDefinition/extension-Measure.group.population
• element Measure.group.population (For version R3)
• extension http://hl7.org/fhir/3.0/StructureDefinition/extension-Measure.group.population
• extension http://hl7.org/fhir/5.0/StructureDefinition/extension-Measure.group.population

Name	Flags	Card.	Type	Description & Constraints
Extension		0..1	Extension	Aggregation method for a measure score (e.g. sum, average, median, minimum, maximum, count)
extension		..0
value[x]		1..	CodeableConcept	Binding: todo (extensible)
url				"http://hl7.org/fhir/5.0/StructureDefinition/extension-Measure.group.population.aggregateMethod"
Documentation for this format

{
  "resourceType" : "StructureDefinition",
  "id" : "xv-r5-mea.gro.pop.aggregateMethod",
  "url" : "http://hl7.org/fhir/5.0/StructureDefinition/extension-Measure.group.population.aggregateMethod",
  "name" : "XVerExtensionMeasure.group.population.aggregateMethodR5",
  "title" : "Cross-Version Extension for Measure.group.population.aggregateMethod in R5",
  "status" : "active",
  "experimental" : false,
  "publisher" : "Health Level Seven International (Clinical Quality Information)",
  "contact" : [{
    "telecom" : [{
      "system" : "url",
      "value" : "http://hl7.org/fhir"
    }]
  },
  {
    "telecom" : [{
      "system" : "url",
      "value" : "http://www.hl7.org/Special/committees/cqi/index.cfm"
    }]
  }],
  "description" : "Cross-Version Extension for Measure.group.population.aggregateMethod. Valid in versions R2, R3, R4, R4B\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" : "4.3"
      },
      {
        "url" : "endFhirVersion",
        "valueCode" : "4.3"
      }],
      "url" : "http://hl7.org/fhir/StructureDefinition/version-specific-use"
    }],
    "type" : "element",
    "expression" : "Measure.group.population"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/4.3/StructureDefinition/extension-Measure.group.population"
  },
  {
    "extension" : [{
      "extension" : [{
        "url" : "startFhirVersion",
        "valueCode" : "4.0"
      },
      {
        "url" : "endFhirVersion",
        "valueCode" : "4.0"
      }],
      "url" : "http://hl7.org/fhir/StructureDefinition/version-specific-use"
    }],
    "type" : "element",
    "expression" : "Measure.group.population"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/4.0/StructureDefinition/extension-Measure.group.population"
  },
  {
    "extension" : [{
      "extension" : [{
        "url" : "startFhirVersion",
        "valueCode" : "3.0"
      },
      {
        "url" : "endFhirVersion",
        "valueCode" : "3.0"
      }],
      "url" : "http://hl7.org/fhir/StructureDefinition/version-specific-use"
    }],
    "type" : "element",
    "expression" : "Measure.group.population"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/3.0/StructureDefinition/extension-Measure.group.population"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/5.0/StructureDefinition/extension-Measure.group.population"
  }],
  "type" : "Extension",
  "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation" : "constraint",
  "differential" : {
    "element" : [{
      "path" : "Extension",
      "short" : "Aggregation method for a measure score (e.g. sum, average, median, minimum, maximum, count)",
      "definition" : "Specifies which method should be used to aggregate measure observation values. For most scoring types, this is implied by scoring (e.g. a proportion measure counts members of the populations). For continuous variables, however, this information must be specified to ensure correct calculation.",
      "requirements" : "For continuous variable measures, specifications must be able to indicate the aggregation method to be used for tallying results from individual observations.",
      "min" : 0,
      "max" : "1",
      "isModifier" : false,
      "mapping" : [{
        "identity" : "rim",
        "map" : "N/A (to add?)"
      }]
    },
    {
      "path" : "Extension.extension",
      "max" : "0"
    },
    {
      "path" : "Extension.value[x]",
      "min" : 1,
      "type" : [{
        "code" : "CodeableConcept"
      }],
      "binding" : {
        "strength" : "extensible",
        "valueSet" : "http://hl7.org/fhir/ValueSet/measure-aggregate-method|5.0.0"
      }
    },
    {
      "path" : "Extension.url",
      "fixedUri" : "http://hl7.org/fhir/5.0/StructureDefinition/extension-Measure.group.population.aggregateMethod"
    }]
  }
}