{
  "resourceType": "StructureDefinition",
  "id": "HdBe-HeadCircumference",
  "language": "en-US",
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/resource-effectivePeriod",
      "valuePeriod": {
        "start": "2020-08-31T22:00:00+00:00"
      }
    }
  ],
  "url": "https://fhir.healthdata.be/StructureDefinition/LogicalModel/HdBe-HeadCircumference",
  "name": "HdBeHeadCircumference",
  "_name": {
    "extension": [
      {
        "extension": [
          {
            "url": "lang",
            "valueCode": "nl-NL"
          },
          {
            "url": "content",
            "valueMarkdown": "HdBeSchedelomvang"
          }
        ],
        "url": "http://hl7.org/fhir/StructureDefinition/translation"
      }
    ]
  },
  "title": "HdBe HeadCircumference",
  "status": "draft",
  "date": "2022-07-07T15:04:03.2592055+00:00",
  "publisher": "Healthdata.be (Sciensano)",
  "contact": [
    {
      "name": "Service portal – healthdata.be",
      "telecom": [
        {
          "system": "url",
          "value": "https://sciensano.service-now.com/sp",
          "use": "work"
        }
      ]
    }
  ],
  "description": "The head circumference is the size of the head as measured around the head.\r\n#### Purpose\r\nThe head circumference can provide insight into the growth of a(n unborn) child. There may also be a smaller (microcephaly) or larger (macrocephaly) head circumference than average, which can indicate certain diseases or syndromes.\r\n#### Evidence Base\r\nThe definitions of the concepts were (partly) based on the guidelines Fetal Growth Retardation of the NVOG and PTEN Hamartoma Tumor Syndrome by the VKGN.\r\n### Patient Population\r\nThe HeadCircumference information model is meant for all patients, including unborn children.",
  "_description": {
    "extension": [
      {
        "extension": [
          {
            "url": "lang",
            "valueCode": "nl-NL"
          },
          {
            "url": "content",
            "valueMarkdown": "De schedelomvang (ook wel hoofdomtrek) is de grootte van het hoofd rondom gemeten.\r\n#### Purpose\r\nDe schedelomvang kan inzicht geven in de groei van een (ongeboren) kind. Daarnaast kan er sprake zijn van een kleiner (microcefalie) of grotere (macrocefalie) hoofdomtrek dan gemiddeld, wat een aanwijzing kan zijn voor bepaalde aandoeningen of syndromen.\r\n#### Evidence Base\r\nDe definities van de concepten zijn (deels) gebaseerd op de richtlijn Foetale Groeibeperking van de NVOG en PTEN Hamartoom Tumor Syndroom van de VKGN.\r\n\r\n\r\n#### Patient Population\r\nDe Schedelomvang bouwsteen is bedoeld voor alle patiënten, inclusief ongeboren kinderen.\r\n#### Traceability to other Standards\r\nDeze zorginformatie bouwsteen is in lijn met de bouwsteen blauwdruk Meting v1.0."
          }
        ],
        "url": "http://hl7.org/fhir/StructureDefinition/translation"
      }
    ]
  },
  "copyright": "Copyright and related rights waived via CC0, https://creativecommons.org/publicdomain/zero/1.0/. This does not apply to information from third parties, for example a medical terminology system. The implementer alone is responsible for identifying and obtaining any necessary licenses or authorizations to utilize third party IP in connection with the specification or otherwise.",
  "fhirVersion": "4.0.1",
  "kind": "logical",
  "abstract": true,
  "type": "https://fhir.healthdata.be/StructureDefinition/LogicalModel/HeadCircumference",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Element",
  "derivation": "specialization",
  "snapshot": {
    "element": [
      {
        "id": "HeadCircumference",
        "path": "HeadCircumference",
        "short": "HeadCircumference",
        "_short": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "Schedelomvang"
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "definition": "Root concept of the HeadCircumference information model. This root concept contains all data elements of the HeadCircumference information model.",
        "_definition": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "Rootconcept van de bouwsteen Schedelomvang. Dit rootconcept bevat alle gegevenselementen van de bouwsteen Schedelomvang."
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "min": 0,
        "max": "*",
        "base": {
          "path": "HeadCircumference",
          "min": 0,
          "max": "*"
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          "ele-1"
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            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() | (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "HeadCircumference.id",
        "path": "HeadCircumference.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "comment": "Note that FHIR strings may not exceed 1MB in size",
        "min": 0,
        "max": "1",
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            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() | (children().count() > id.count())",
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            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "HeadCircumference.extension",
        "path": "HeadCircumference.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional Content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
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        "constraint": [
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            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() | (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension"
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        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
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          {
            "identity": "rim",
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        ]
      },
      {
        "id": "HeadCircumference.HeadCircumferenceMeasuringMethod",
        "path": "HeadCircumference.HeadCircumferenceMeasuringMethod",
        "short": "HeadCircumferenceMeasuringMethod",
        "_short": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "SchedelomvangMeetmethode"
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "definition": "There are different methods to measure the head circumference: prenatal measurement using ultrasound or postnatal measurement using a measuring tape by measuring from the backside of the head (occiput) to above the eyes (supraorbital).",
        "_definition": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "Er zijn verschillende methoden om de schedelomvang te meten: prenatale meting via echografisch onderzoek of meting na geboorte met een meetlint door vanaf het achterhoofd (occiput) naar boven de ogen (supraorbitaal) te meten."
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "comment": "Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "HeadCircumference.HeadCircumferenceMeasuringMethod",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "condition": [
          "ele-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() | (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          }
        ],
        "binding": {
          "strength": "extensible",
          "description": "HeadCircumferenceMeasuringMethod codes",
          "valueSet": "https://fhir.healthdata.be/ValueSet/SchedelomvangMeetmethode"
        },
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          },
          {
            "identity": "v2",
            "map": "CE/CNE/CWE"
          },
          {
            "identity": "rim",
            "map": "CD"
          },
          {
            "identity": "orim",
            "map": "fhir:CodeableConcept rdfs:subClassOf dt:CD"
          }
        ]
      },
      {
        "id": "HeadCircumference.Comment",
        "path": "HeadCircumference.Comment",
        "short": "Comment",
        "_short": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "Toelichting"
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "definition": "Comment on the head circumference.",
        "_definition": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "De toelichting op de schedelomvang."
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "comment": "Note that FHIR strings may not exceed 1MB in size",
        "min": 0,
        "max": "1",
        "base": {
          "path": "HeadCircumference.Comment",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "condition": [
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        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() | (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
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        "mapping": [
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            "identity": "rim",
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        ]
      },
      {
        "id": "HeadCircumference.HeadCircumferenceMeasurement",
        "path": "HeadCircumference.HeadCircumferenceMeasurement",
        "short": "HeadCircumferenceMeasurement",
        "_short": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "SchedelomvangWaarde"
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "definition": "The value of the head circumference as measured in millimeters or centimeters.",
        "_definition": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "De waarde van de schedelomvang zoals in millimeters of centimeters gemeten."
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "comment": "The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "HeadCircumference.HeadCircumferenceMeasurement",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "Quantity"
          }
        ],
        "condition": [
          "ele-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() | (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          },
          {
            "key": "qty-3",
            "severity": "error",
            "human": "If a code for the unit is present, the system SHALL also be present",
            "expression": "code.empty() or system.exists()",
            "xpath": "not(exists(f:code)) or exists(f:system)",
            "source": "http://hl7.org/fhir/StructureDefinition/Quantity"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          },
          {
            "identity": "v2",
            "map": "SN (see also Range) or CQ"
          },
          {
            "identity": "rim",
            "map": "PQ, IVL<PQ>, MO, CO, depending on the values"
          }
        ]
      },
      {
        "id": "HeadCircumference.HeadCircumferenceDate",
        "path": "HeadCircumference.HeadCircumferenceDate",
        "short": "HeadCircumferenceDate",
        "_short": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "SchedelomvangDatumTijd"
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "definition": "The date on which the head circumference was measured.",
        "_definition": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "De datum waarop de schedelomvang is gemeten."
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "min": 1,
        "max": "1",
        "base": {
          "path": "HeadCircumference.HeadCircumferenceDate",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "dateTime"
          }
        ],
        "condition": [
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        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() | (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
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  },
  "differential": {
    "element": [
      {
        "id": "HeadCircumference",
        "path": "HeadCircumference",
        "short": "HeadCircumference",
        "_short": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "Schedelomvang"
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "definition": "Root concept of the HeadCircumference information model. This root concept contains all data elements of the HeadCircumference information model.",
        "_definition": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "Rootconcept van de bouwsteen Schedelomvang. Dit rootconcept bevat alle gegevenselementen van de bouwsteen Schedelomvang."
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "min": 0,
        "max": "*"
      },
      {
        "id": "HeadCircumference.HeadCircumferenceMeasuringMethod",
        "path": "HeadCircumference.HeadCircumferenceMeasuringMethod",
        "short": "HeadCircumferenceMeasuringMethod",
        "_short": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "SchedelomvangMeetmethode"
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "definition": "There are different methods to measure the head circumference: prenatal measurement using ultrasound or postnatal measurement using a measuring tape by measuring from the backside of the head (occiput) to above the eyes (supraorbital).",
        "_definition": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "Er zijn verschillende methoden om de schedelomvang te meten: prenatale meting via echografisch onderzoek of meting na geboorte met een meetlint door vanaf het achterhoofd (occiput) naar boven de ogen (supraorbitaal) te meten."
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "min": 0,
        "max": "1",
        "type": [
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            "code": "CodeableConcept"
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        ],
        "binding": {
          "strength": "extensible",
          "description": "HeadCircumferenceMeasuringMethod codes",
          "valueSet": "https://fhir.healthdata.be/ValueSet/SchedelomvangMeetmethode"
        }
      },
      {
        "id": "HeadCircumference.Comment",
        "path": "HeadCircumference.Comment",
        "short": "Comment",
        "_short": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "Toelichting"
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "definition": "Comment on the head circumference.",
        "_definition": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "De toelichting op de schedelomvang."
                }
              ],
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      {
        "id": "HeadCircumference.HeadCircumferenceMeasurement",
        "path": "HeadCircumference.HeadCircumferenceMeasurement",
        "short": "HeadCircumferenceMeasurement",
        "_short": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "SchedelomvangWaarde"
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "definition": "The value of the head circumference as measured in millimeters or centimeters.",
        "_definition": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "De waarde van de schedelomvang zoals in millimeters of centimeters gemeten."
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "Quantity"
          }
        ]
      },
      {
        "id": "HeadCircumference.HeadCircumferenceDate",
        "path": "HeadCircumference.HeadCircumferenceDate",
        "short": "HeadCircumferenceDate",
        "_short": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "SchedelomvangDatumTijd"
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "definition": "The date on which the head circumference was measured.",
        "_definition": {
          "extension": [
            {
              "extension": [
                {
                  "url": "lang",
                  "valueCode": "nl-NL"
                },
                {
                  "url": "content",
                  "valueMarkdown": "De datum waarop de schedelomvang is gemeten."
                }
              ],
              "url": "http://hl7.org/fhir/StructureDefinition/translation"
            }
          ]
        },
        "min": 1,
        "max": "1",
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            "code": "dateTime"
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      }
    ]
  }
}