{
  "resourceType": "StructureDefinition",
  "id": "ordinalValue",
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "fhir"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger": 1
    }
  ],
  "url": "http://hl7.org/fhir/StructureDefinition/ordinalValue",
  "version": "4.0.0",
  "name": "Ordinal Value",
  "status": "draft",
  "date": "2013-12-05",
  "publisher": "Health Level Seven International (FHIR Infrastructure)",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://www.hl7.org/Special/committees/fiwg"
        }
      ]
    }
  ],
  "description": "A numeric value that allows the comparison (less than, greater than) or other numerical \nmanipulation of a concept (e.g. Adding up components of a score). Scores are usually a whole number, but occasionally decimals are encountered in scores.",
  "fhirVersion": "4.0.0",
  "mapping": [
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "Coding"
    },
    {
      "type": "element",
      "expression": "Questionnaire.item.answerOption"
    },
    {
      "type": "element",
      "expression": "CodeSystem.concept"
    },
    {
      "type": "element",
      "expression": "ValueSet.compose.include.concept"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "Assigned Ordinal Value",
        "definition": "A numeric value that allows the comparison (less than, greater than) or other numerical \nmanipulation of a concept (e.g. Adding up components of a score). Scores are usually a whole number, but occasionally decimals are encountered in scores.",
        "comment": "Scores are commonly encountered in various clinical assessment scales. Assigning a value to a concept should generally be done in a formal code system that defines the value, or in an applicable value set for the concept, but some concepts do not have a formal definition (or are not even represented as a concept formally, especially in [Questionnaires](questionnaire.html), \nso this extension is allowed to appear ouside those preferred contexts.  Scores may even be assigned arbitrarily during use (hence, on Coding). The value may be constrained to an integer in some contexts of use. Todo: Scoring algorithms may also be defined directly, but how this is done is not yet defined.",
        "min": 0,
        "max": "1"
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "max": "0"
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "http://hl7.org/fhir/StructureDefinition/ordinalValue"
      },
      {
        "id": "Extension.valueDecimal",
        "path": "Extension.valueDecimal",
        "type": [
          {
            "code": "decimal"
          }
        ]
      }
    ]
  }
}