{
  "resourceType": "StructureDefinition",
  "id": "au-headcircum",
  "url": "http://hl7.org.au/fhir/StructureDefinition/au-headcircum",
  "version": "1.1.0",
  "name": "AUHeadCircum",
  "title": "AU Head Circumference",
  "status": "draft",
  "publisher": "Health Level Seven Australia (Orders and Observations WG)",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org.au/fhir",
          "use": "work"
        }
      ]
    }
  ],
  "description": "This profile defines a head circumference information structure for use in an Australian context that tightens the HeadCircumCode slice, aligning to the proposed [R4 Observation Head Circumference](http://build.fhir.org/headcircum.html) profile.",
  "copyright": "This resource contains content from LOINC™ (http://loinc.org). The LOINC Table, LOINC Table Core, LOINC Panels and Forms File, LOINC Answer File, LOINC Part File, LOINC Group File, LOINC Document Ontology File, LOINC Hierarchies, LOINC Linguistic Variants File, LOINC/RSNA Radiology Playbook, and LOINC/IEEE Medical Device Code Mapping Table are copyright © 1995-2017, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.",
  "fhirVersion": "3.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "Observation",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/headcircum",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Observation",
        "path": "Observation",
        "short": "An observation of head circumference in an Australian healthcare context"
      },
      {
        "id": "Observation.code",
        "path": "Observation.code",
        "short": "Required head circumference code"
      },
      {
        "id": "Observation.code.coding",
        "path": "Observation.code.coding",
        "short": "Required coding",
        "min": 1
      },
      {
        "id": "Observation.code.coding:HeadCircumCode",
        "path": "Observation.code.coding",
        "sliceName": "HeadCircumCode",
        "short": "Head circumference code",
        "min": 1,
        "max": "1"
      },
      {
        "id": "Observation.code.coding:HeadCircumCode.system",
        "path": "Observation.code.coding.system",
        "short": "LOINC coding system",
        "min": 1
      },
      {
        "id": "Observation.code.coding:HeadCircumCode.code",
        "path": "Observation.code.coding.code",
        "short": "Head circumference LOINC code",
        "min": 1
      }
    ]
  }
}