{

"resourceType": "ObservationDefinition",
"id": "example",
"code": {
  "coding": [
    {
      "system": "http://loinc.org",
      "code": "15074-8",
      "display": "Glucose [Moles/volume] in Blood"
    }
  ]
},
"meta": {
  "tag": [
    {
      "system": "http://terminology.hl7.org/CodeSystem/v3-ActReason",
      "code": "HTEST",
      "display": "test health data"
    }
  ]
}

}