This page is part of the International Patient Summary Implementation Guide (v1.1.0: STU 1) based on FHIR R4. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions 
Mappings for the Observation-pregnancy-edd-uv-ips resource profile.
| ObservationPregnancyEddUvIps |
| Observation | OBX |
| identifier | OBX.21 For OBX segments from systems without OBX-21 support a combination of ORC/OBR and OBX must be negotiated between trading partners to uniquely identify the OBX segment. Depending on how V2 has been implemented each of these may be an option: 1) OBR-3 + OBX-3 + OBX-4 or 2) OBR-3 + OBR-4 + OBX-3 + OBX-4 or 2) some other way to uniquely ID the OBR/ORC + OBX-3 + OBX-4. |
| basedOn | ORC |
| partOf | Varies by domain |
| status | OBX-11 |
| code | CE/CNE/CWE |
| subject | PID-3 |
| focus | OBX-3 |
| encounter | PV1 |
| effective[x] | OBX-14, and/or OBX-19 after v2.4 (depends on who observation made) |
| issued | OBR.22 (or MSH.7), or perhaps OBX-19 (depends on who observation made) |
| performer | OBX.15 / (Practitioner) OBX-16, PRT-5:PRT-4='RO' / (Device) OBX-18 , PRT-10:PRT-4='EQUIP' / (Organization) OBX-23, PRT-8:PRT-4='PO' |
| value[x] | OBX.2, OBX.5, OBX.6 |
| value[x] (valueDateTime) | OBX.2, OBX.5, OBX.6 |
| dataAbsentReason | N/A |
| interpretation | OBX-8 |
| note | NTE.3 (partner NTE to OBX, or sometimes another (child?) OBX) |
| hasMember | Relationships established by OBX-4 usage |
| derivedFrom | Relationships established by OBX-4 usage |
| ObservationPregnancyEddUvIps |
| Observation | Entity. Role, or Act, Observation[classCode=OBS, moodCode=EVN] |
| text | Act.text? |
| contained | N/A |
| extension | N/A |
| modifierExtension | N/A |
| identifier | id |
| basedOn | .inboundRelationship[typeCode=COMP].source[moodCode=EVN] |
| partOf | .outboundRelationship[typeCode=FLFS].target |
| status | status Amended & Final are differentiated by whether it is the subject of a ControlAct event with a type of "revise" |
| category | .outboundRelationship[typeCode="COMP].target[classCode="LIST", moodCode="EVN"].code |
| code | n/a, CD |
| subject | participation[typeCode=RTGT] |
| id | n/a |
| extension | n/a |
| reference | N/A |
| type | N/A |
| identifier | .identifier |
| display | N/A |
| focus | participation[typeCode=SBJ] |
| encounter | inboundRelationship[typeCode=COMP].source[classCode=ENC, moodCode=EVN] |
| effective[x] | effectiveTime |
| extension (data-absent-reason) | ANY.nullFlavor |
| issued | participation[typeCode=AUT].time |
| performer | participation[typeCode=PRF] |
| value[x] | value |
| value[x] (valueDateTime) | value |
| dataAbsentReason | value.nullFlavor |
| interpretation | interpretationCode |
| note | subjectOf.observationEvent[code="annotation"].value |
| hasMember | outBoundRelationship |
| derivedFrom | .targetObservation |
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