{
  "resourceType": "StructureDefinition",
  "id": "zib-HeadCircumference",
  "url": "http://nictiz.nl/fhir/StructureDefinition/zib-HeadCircumference",
  "version": "1.0.2",
  "name": "Zib HeadCircumference",
  "title": "HCIM HeadCircumference",
  "status": "active",
  "publisher": "Nictiz",
  "contact": [
    {
      "name": "Nictiz",
      "telecom": [
        {
          "system": "url",
          "value": "https://www.nictiz.nl",
          "use": "work"
        }
      ]
    }
  ],
  "description": "The head circumference is the size of the head as measured around the head.",
  "purpose": "The 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.",
  "copyright": "CC0",
  "fhirVersion": "3.0.2",
  "mapping": [
    {
      "identity": "hcim-basicelements-v1.0-2017EN",
      "uri": "https://zibs.nl/wiki/BasicElements-v1.0(2017EN)",
      "name": "HCIM BasicElements-v1.0(2017EN)"
    },
    {
      "identity": "hcim-HeadCircumference-v1.1-2017EN",
      "uri": "https://zibs.nl/wiki/HeadCircumference-v1.1(2017EN)",
      "name": "HCIM HeadCircumference-v1.1(2017EN)"
    }
  ],
  "kind": "resource",
  "abstract": false,
  "type": "Observation",
  "baseDefinition": "http://nictiz.nl/fhir/StructureDefinition/headcircum",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Observation",
        "path": "Observation",
        "short": "Head Circumference",
        "definition": "This profile defines how to represent Head Circumference observations in FHIR using a standard LOINC code and UCUM units of measure. The Head Circumference is measured in centimeters.",
        "alias": [
          "Schedelomvang"
        ],
        "mapping": [
          {
            "identity": "hcim-HeadCircumference-v1.1-2017EN",
            "map": "NL-CM:12.14.1",
            "comment": "HeadCircumference"
          }
        ]
      },
      {
        "id": "Observation.code.coding:HCIMHeadCircumCode",
        "path": "Observation.code.coding",
        "sliceName": "HCIMHeadCircumCode",
        "comment": "SNOMED code 56792006 is prescribed by HCIM HeadCircumference, but both the 2020 release of this HCIM and the Vital Signs HeadCircum profile in FHIR R4 will adopt LOINC code 9843-4. Therefore, this SNOMED code is made optional in favor of the LOINC code in the HeadCircumferenceCode slice."
      },
      {
        "id": "Observation.code.coding:HCIMHeadCircumCode.system",
        "path": "Observation.code.coding.system",
        "min": 1,
        "fixedUri": "http://snomed.info/sct"
      },
      {
        "id": "Observation.code.coding:HCIMHeadCircumCode.code",
        "path": "Observation.code.coding.code",
        "min": 1,
        "fixedCode": "56792006"
      },
      {
        "id": "Observation.effective[x]",
        "path": "Observation.effective[x]",
        "short": "HeadCircumferenceDate",
        "definition": "The date on which the head circumference was measured.",
        "alias": [
          "SchedelomvangDatumTijd"
        ],
        "mapping": [
          {
            "identity": "hcim-HeadCircumference-v1.1-2017EN",
            "map": "NL-CM:12.14.2",
            "comment": "HeadCircumferenceDate"
          }
        ]
      },
      {
        "id": "Observation.valueQuantity:valueQuantity",
        "path": "Observation.valueQuantity",
        "sliceName": "valueQuantity",
        "short": "SchedelomvangDatumTijd",
        "definition": "The value of the head circumference as measured in centimeters (cm).",
        "alias": [
          "SchedelomvangWaarde"
        ],
        "mapping": [
          {
            "identity": "hcim-HeadCircumference-v1.1-2017EN",
            "map": "NL-CM:12.14.3",
            "comment": "HeadCircumferenceMeasurement"
          }
        ]
      },
      {
        "id": "Observation.comment",
        "path": "Observation.comment",
        "short": "Comment",
        "definition": "Comment on the head circumference.",
        "alias": [
          "Toelichting"
        ],
        "mapping": [
          {
            "identity": "hcim-HeadCircumference-v1.1-2017EN",
            "map": "NL-CM:12.14.4",
            "comment": "Comment"
          }
        ]
      },
      {
        "id": "Observation.method",
        "path": "Observation.method",
        "short": "HeadCircumferenceMeasuringMethod",
        "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).",
        "alias": [
          "SchedelomvangMeetmethode"
        ],
        "binding": {
          "strength": "extensible",
          "description": "SchedelomvangMeetmethodeCodelijst",
          "valueSetReference": {
            "reference": "http://decor.nictiz.nl/fhir/ValueSet/2.16.840.1.113883.2.4.3.11.60.40.2.12.14.1--20171231000000",
            "display": "SchedelomvangMeetmethodeCodelijst"
          }
        },
        "mapping": [
          {
            "identity": "hcim-HeadCircumference-v1.1-2017EN",
            "map": "NL-CM:12.14.5",
            "comment": "HeadCircumferenceMeasuringMethod"
          }
        ]
      }
    ]
  }
}