{
  "resourceType": "StructureDefinition",
  "id": "de-Quantity.comparator",
  "meta": {
    "lastUpdated": "2019-02-10T00:11:08.953+00:00"
  },
  "url": "http://hl7.org/fhir/StructureDefinition/de-Quantity.comparator",
  "version": "4.0.0",
  "name": "Quantity.comparator",
  "title": "Quantity.comparator",
  "status": "draft",
  "experimental": true,
  "date": "2019-02-10T00:11:08+00:00",
  "publisher": "HL7 FHIR Standard",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org/fhir"
        }
      ]
    }
  ],
  "description": "Data Element for Quantity.comparator",
  "purpose": "Data Elements are defined for each element to assist in questionnaire construction etc",
  "fhirVersion": "4.0.0",
  "mapping": [
    {
      "identity": "v2",
      "uri": "http://hl7.org/v2",
      "name": "HL7 v2 Mapping"
    },
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "logical",
  "abstract": false,
  "type": "Quantity.comparator",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Element",
  "derivation": "specialization",
  "snapshot": {
    "element": [
      {
        "id": "Quantity.comparator",
        "path": "Quantity.comparator",
        "short": "< | <= | >= | > - how to understand the value",
        "definition": "How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is \"<\" , then the real value is < stated value.",
        "requirements": "Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Quantity.comparator",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "code"
          }
        ],
        "meaningWhenMissing": "If there is no comparator, then there is no modification of the value",
        "isModifier": true,
        "isModifierReason": "This is labeled as \"Is Modifier\" because the comparator modifies the interpretation of the value significantly. If there is no comparator, then there is no modification of the value",
        "isSummary": true,
        "binding": {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
              "valueString": "QuantityComparator"
            }
          ],
          "strength": "required",
          "description": "How the Quantity should be understood and represented.",
          "valueSet": "http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.0"
        },
        "mapping": [
          {
            "identity": "v2",
            "map": "SN.1  / CQ.1"
          },
          {
            "identity": "rim",
            "map": "IVL properties"
          }
        ]
      }
    ]
  }
}