"display": "Vital Signs",
"system": "http://hl7.org/fhir/observation-category"
"code": "blood_pressure",
"display": "blood_pressure",
"system": "http://loinc.org"
"display": "systolic_blood_pressure",
"system": "http://loinc.org"
"system": "http://unitsofmeasure.org",
"display": "diastolic_blood_pressure",
"system": "http://loinc.org"
"system": "http://unitsofmeasure.org",
"system": "http://loinc.org"
"system": "http://unitsofmeasure.org",
"reference": "08281fa8-d8f2-4cac-b46b-d9cd951058e9"
"display": "blood_pressure_monitor",
"reference": "5c98c120184d54001718d5ce"
"effectiveDateTime": "2019-12-10T17:24:04.227Z",
"resourceType": "Observation",