The following Table provides the detailed mapping for the OMH Body Weight DataPoint to the OMH to FHIR Observation Profile TODO: add link to map and profile:
| Index | OMH Body Weight Element | FHIR Attribute | Mapping Instructions |
|---|---|---|---|
| 1 | body-weight-2.0.json | OMH to FHIR Observation Profile | |
| 2.1 | body_weight | Observation.valueQuantity | see valueQuantity elements below |
| 2.2 | body_weight.value | Observation.valueQuantity.value | = body_weight.value |
| 2.3 | body_weight.unit | Observation.valueQuantity.unit | = body_weight.unit |
| 2.4 | body_weight.unit | Observation.valueQuantity.system | fixed to 'http://unitsofmeasure.org' |
| 2.5 | body_weight.unit | Observation.valueQuantity.code | Map body_weight.unit to column 'FHIR Concept' using the OMH_FHIR_Concept_Mapping_Table |
| 3 | body.effective_time_frame | Observation.effective[x] | Mappping depends on type- see below |
| 5 | body.effective_time_frame.date_time | Observation.effectiveDateTime | = body.effective_time_frame.date_time |
| 4 | body.effective_time_frame.time_interval | Observation.effectivePeriod | see effectivePeriod elements below |
| 8.1 | body.effective_time_frame.time_interval.start_date_time | Observation.effectivePeriod.start | = body.effective_time_frame.time_interval.start_date_time |
| 8.0 | body.effective_time_frame.time_interval.end_date_time | Observation.effectivePeriod.end | = body.effective_time_frame.time_interval.end_date_time |
| 9 | body.descriptive_statistic | Observation.code.coding[1] | Map descriptive statistic to the OMH to FHIR additional Observation codings ( code system http://www.fhir.org/guides/mfhir/omh_fhir_observation_codes). |
| 9.1 | body.descriptive_statistic | Observation.code.coding[1].code | concatenation of header.schema_id.name = 'body-weight' + '-' + body.descriptive_statistic for example= body-weight-maximum |
| 9.2 | body.descriptive_statistic | Observation.code.coding[1].system | fixed to '"http://www.fhir.org/guides/mfhir/omh_fhir_observation_codes"' |
| 9.3 | body.descriptive_statistic | Observation.code.coding[1].display | concatenation of header.schema_id.name = 'body-weight' + '-' + body.descriptive_statistic for example= body-weight-maximum |
The following OMH body-weight schema instance:
{
"header": {
"id": "052f8cd8-b537-4c6d-b9d7-ea8955b5ca78",
"creation_date_time": "2020-05-30T01:58:56.116568Z",
"schema_id": {
"namespace": "omh",
"name": "body-weight",
"version": "2.0"
},
"acquisition_provenance": {
"source_name": "Acme body-weight device",
"source_creation_date_time": "2020-05-30T01:58:56.116568Z",
"source_data_point_id": "6f3a11a2-0e34-4ef5-a226-1fd7277e82d0",
"modality": "sensed"
},
"user_id": "16f1819f-06f3-4035-910d-430fcb770200"
},
"body": {
"body_weight": {
"value": 50,
"unit": "kg"
},
"effective_time_frame": {
"date_time": "2020-02-05T09:45:00-08:00"
}
}
}Maps to this FHIR Observation (note that this example does not include the optional Provenance resource)
{
"resourceType": "Observation",
"meta": {
"profile": [
"http://www.fhir.org/mfhir/StructureDefinition/omh_fhir_profile_quantitative_observation"
]
},
"identifier": [
{
"system": "https://omh.org/shimmer/ids",
"value": "052f8cd8-b537-4c6d-b9d7-ea8955b5ca78"
}
],
"status": "unknown",
"category": [
{
"coding": [
{
"system": "http://terminology.hl7.org/CodeSystem/observation-category",
"code": "vital-signs",
"display": "Vital Signs"
}
]
}
],
"code": {
"coding": [
{
"system": "http://loinc.org",
"code": "29463-7",
"display": "Body weight"
}
]
},
"subject": {
"identifier": {
"system": "https://omh.org/shimmer/patient_ids",
"value": "16f1819f-06f3-4035-910d-430fcb770200"
}
},
"effectiveDateTime": "2020-02-05T09:45:00-08:00",
"issued": "2020-05-30T01:58:56.116568Z",
"valueQuantity": {
"value": 50,
"unit": "kg",
"system": "http://unitsofmeasure.org",
"code": "kg"
},
"device": {
"extension": [
{
"url": "http://www.fhir.org/mfhir/StructureDefinition/omh_fhir_observation_device_modality",
"valueCode": "sensed"
}
],
"display": "Acme body-weight device"
}
}The following OMH body-weight schema instance:
{
"header": {
"id": "7a5a99c3-4016-4ad1-b6f6-c6cadbbc6cfc",
"creation_date_time": "2020-05-30T02:00:21.970018Z",
"schema_id": {
"namespace": "omh",
"name": "body-weight",
"version": "2.0"
},
"acquisition_provenance": {
"source_name": "Acme body-weight device",
"source_creation_date_time": "2020-05-30T02:00:21.970018Z",
"source_data_point_id": "7f60b101-310a-423d-a2c1-498f27a7834d",
"modality": "sensed"
},
"user_id": "9d3cf336-bcbd-4865-9cc2-e1aa54630c3b"
},
"body": {
"body_weight": {
"value": 49.5,
"unit": "kg"
},
"effective_time_frame": {
"time_interval": {
"start_date_time": "2020-02-05T09:45:00-08:00",
"end_date_time": "2020-03-05T10:40:00-08:00"
}
},
"descriptive_statistic": "minimum"
}
}Maps to this FHIR Observation (note that this example does not include the optional Provenance resource)
{
"resourceType": "Observation",
"meta": {
"profile": [
"http://www.fhir.org/mfhir/StructureDefinition/omh_fhir_profile_quantitative_observation"
]
},
"identifier": [
{
"system": "https://omh.org/shimmer/ids",
"value": "7a5a99c3-4016-4ad1-b6f6-c6cadbbc6cfc"
}
],
"status": "unknown",
"category": [
{
"coding": [
{
"system": "http://terminology.hl7.org/CodeSystem/observation-category",
"code": "vital-signs",
"display": "Vital Signs"
}
]
}
],
"code": {
"coding": [
{
"system": "http://loinc.org",
"code": "29463-7",
"display": "Body weight"
},
{
"system": "http://hl7.org/fhir/omh_fhir_observation_codes",
"code": "body-weight-minimum",
"display": "Body Weight-Minimum"
}
]
},
"subject": {
"identifier": {
"system": "https://omh.org/shimmer/patient_ids",
"value": "9d3cf336-bcbd-4865-9cc2-e1aa54630c3b"
}
},
"effectivePeriod": {
"start": "2020-02-05T09:45:00-08:00",
"end": "2020-03-05T10:40:00-08:00"
},
"issued": "2020-05-30T02:00:21.970018Z",
"valueQuantity": {
"value": 49.5,
"unit": "kg",
"system": "http://unitsofmeasure.org",
"code": "kg"
},
"device": {
"extension": [
{
"url": "http://www.fhir.org/mfhir/StructureDefinition/omh_fhir_observation_device_modality",
"valueCode": "sensed"
}
],
"display": "Acme body-weight device"
}
}