In the Observation resource for FHIR stu3 , the referenceRange attribute identifies the Provides guide for interpretation
"referenceRange":
"comment":
"code": {
"coding": [
{
"code": "29463-7",
"system": "http://loinc.org",
"display": "Body Weight"
},
{
"code": "3141-9",
"system": "http://loinc.org",
"display": "Body weight Measured"
},
{
"code": "27113001",
"system": "http://snomed.info/sct",
"display": "Body weight"
},
{
"code": "body-weight",
"system": "http://acme.org/devices/clinical-codes",
"display": "Body Weight"
}
]
}
"interpretation":
"issued":
"related":
"performer":
"bodySite":
"dataAbsentReason":
"subject": {
"reference": "Patient/example"
}
"category": [
{
"coding": [
{
"code": "vital-signs",
"system": "http://hl7.org/fhir/observation-category",
"display": "Vital Signs"
}
]
}
]
"basedOn":
"valueBoolean":
"effectiveDateTime": "2016-03-28"
"method":
"valueString":
"status": "final"
"valueCodeableConcept":
"specimen":
"effectivePeriod":
"component":
"valueRange":
"device":
"valueDateTime":
"valueSampledData":
"valueTime":
"valuePeriod":
"referenceRange":
"valueQuantity": {
"code": "[lb_av]",
"unit": "lbs",
"value": 185,
"system": "http://unitsofmeasure.org"
}
"valueRatio":
"valueAttachment":
"context": {
"reference": "Encounter/example"
}
"identifier":