This code system http://terminology.hl7.org/CodeSystem/v2-0100 defines the following codes: Real-world NSW My Personal Health Record example

{
  "resourceType" : "QuestionnaireResponse",
  "id" : "bb",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n      <pre>\n        Cathy Jones, female. Birth weight 3.25 kg at 44.3 cm. \n        Injection of Vitamin K given on 1972-11-30 (first dose) and 1972-12-11 (second dose)\n        Note: Was able to speak Chinese at birth.\n      </pre>\n    </div>"
  },
  "questionnaire" : "http://hl7.org/fhir/Questionnaire/bb",
  "status" : "completed",
  "subject" : {
    "reference" : "http://hl7.org/fhir/Patient/1",
    "type" : "Patient"
  },
  "authored" : "2013-02-19T14:15:00+10:00",
  "author" : {
    "reference" : "http://hl7.org/fhir/Practitioner/example",
    "type" : "Practitioner"
  },
  "item" : [{
    "linkId" : "birthDetails",
    "text" : "Birth details - To be completed by health professional",
    "item" : [{
      "linkId" : "group",
      "item" : [{
        "linkId" : "nameOfChild",
        "text" : "Name of child",
        "answer" : [{
          "valueString" : "Cathy Jones"
        }]
      },
      {
        "linkId" : "sex",
        "text" : "Sex",
        "answer" : [{
          "valueCoding" : {
            "code" : "F"
          }
        }]
      }]
    },
    {
      "linkId" : "neonatalInformation",
      "text" : "Neonatal Information",
      "item" : [{
        "linkId" : "birthWeight",
        "text" : "Birth weight (kg)",
        "answer" : [{
          "valueDecimal" : 3.25
        }]
      },
      {
        "linkId" : "birthLength",
        "text" : "Birth length (cm)",
        "answer" : [{
          "valueDecimal" : 44.3
        }]
      },
      {
        "linkId" : "vitaminKgiven",
        "text" : "Vitamin K given",
        "answer" : [{
          "valueCoding" : {
            "code" : "INJECTION"
          },
          "item" : [{
            "linkId" : "vitaminKgivenDoses",
            "item" : [{
              "linkId" : "vitaminKDose1",
              "text" : "1st dose",
              "answer" : [{
                "valueDateTime" : "1972-11-30"
              }]
            },
            {
              "linkId" : "vitaminKDose2",
              "text" : "2nd dose",
              "answer" : [{
                "valueDateTime" : "1972-12-11"
              }]
            }]
          }]
        }]
      },
      {
        "linkId" : "hepBgiven",
        "text" : "Hep B given y / n",
        "answer" : [{
          "valueBoolean" : true,
          "item" : [{
            "linkId" : "hepBgivenDate",
            "text" : "Date given",
            "answer" : [{
              "valueDate" : "1972-12-04"
            }]
          }]
        }]
      },
      {
        "linkId" : "abnormalitiesAtBirth",
        "text" : "Abnormalities noted at birth",
        "answer" : [{
          "valueString" : "Already able to speak Chinese"
        }]
      }]
    }]
  }]
}