V2-FHIR Mapping - Segment: OBX[Media] - Orders & Observations (2024)

HL7 V2
HL7 FHIR
CommentsNameDefinitionData TypeMapping Rules
NameDefinitionData TypeMapping Rules
OBX-01.00.00 -Set ID - OBXThis field contains the sequence number.

SI

This field doesn't warrant mappingOBX-02.00.00 - Value TypeThis field defines the data type of OBX-5, Observation ValueID

Media.type??Classification of media as image, video, or audiocode

Can we tell an image from a video by OBX-2 or is OBX-3 more appropriate?

Will there ever be a value other than RP that maps to Media?

OBX-03.00.00 - Observation IdentifierThis field contains a unique identifier for the observation.CWE

Media.type??

or

Media.modality

or

Media.view

Classification of media as image, video, or audio

or

The type of acquisition equipment/process

or

Imaging view, e.g. Lateral or Antero-posterior

code

or

CodeableConcept

or

CodeableConcept

OBX-04.00.00 - Observation Sub-IDThis field is used to distinguish between multiple OBX segments with the same observation ID organized under one OBR. Starting with V2.8.2 the data type was changed from ST to OG to enable improved structured grouping of observation segmentsOG







OBX-05.00.00 - Observation ValueThis field contains the value observed by the observation producerVaries

Media.content.urlUri where the data can be founduri

If the data type is RP, additional mappings to the Attachment data type are possibleOBX-06.00.00 - UnitsThis field contains the units of measurement for the value in OBX-5CWE






n/a for a media OBX segmentOBX-07.00.00 - References Range
ST






n/a for a media OBX segmentOBX-08.00.00 - Interpretation CodesOne or more codes specifying a categorical assessment of the observation value (OBX.5)CWE







OBX-09.00.00 - ProbabilityThis field contains the probability of a result being true for results with categorical values.NM







OBX-10.00.00 - Nature of Abnormal TestThis field contains the nature of the abnormal test.ID







OBX-11.00.00 - Observation Result StatusThis field contains the observation result statusID

Media.statusThe current state of the {{title}}.codeWill need a translation table
Most OBXs are likely to have a status of F which likely maps to completedOBX-12.00.00 - Effective Date of Reference RangeThis field contains the date (and, optionally, the time) on which the values in OBX-7-reference range went into effect.DTM






n/a for a media OBX segmentOBX-13.00.00 - User Defined Access ChecksThis field permits the producer to record results-dependent codes for classifying the observation at the receiving system. This field should be needed only rarely, because most classifications are fixed attributes of the observation ID and can be defined in the associated observation master fileST






No apparent mapping as this is a fairly broad fieldOBX-14.00.00 - Date/Time of the ObservationThe physiologically relevant date-time or the closest approximation to that date-timeDTM

Media.content.creationDate attachment was first createddateTime

This isn't an exact mapping, but it seems to be better than Media.issuedOBX-15.00.00 - Producer's IDThis field contains a unique identifier of the responsible producing serviceCWE

Media.operator?The person who generated the image


Media.operator can map to a variety of resources. A single mapping might difficult. OBX-15 and -16 might combine to a Practitioner resourceOBX-16.00.00 - Responsible ObserverWhen required, this field contains the identifier of the individual directly responsible for the observationXCN

Media.operator?The person who generated the image



OBX-17.00.00 - Observation MethodThis optional field can be used to transmit the method or procedure by which an observation was obtained when the sending system wishes to distinguish among one measurement obtained by different methods and the distinction is not implicit in the test ID.CWE






This might contribute to Media.type and/or Media.modality and/or Media.viewOBX-18.00.00 - Equipment Instance IdentifierThis field identifies the Equipment Instance (e.g., Analyzer, Analyzer module, group of Analyzers, etc.) responsible for the production of the observationEI

Media.device.identifier

and/or

Media.deviceName

Observing Device

Reference

or

string

OBX-19.00.00 - Date/Time of the AnalysisThis field is used to transfer the time stamp associated with generation of the analytical result by the instrument specified in Equipment Instance IdentifierDTM






Would this be better for Media.content.creation than OBX-11?OBX-20.00.00 - Observation SiteThis field typically contains the body site(s) where the measurement being reported was obtained. This field should not be used for a specimen source or specimen collection site.CWE

Media.bodySiteObserved body partCodeableConceptSee CWE mapping

OBX-21.00.00 - Observation Instance Identifier

This field contains a unique identifier for this observation. This instance identifier is persistent between messages. At this time, there are no documented use cases for this field in the context of messages as described in this chapter.

EI

Media.identifier

or

Media.id

OBX-22.00.00 - Mood CodeThis field identifies the actuality of the observation (e.g., intent, request, promise, event). At this time, there are no documented use cases for this field in the context of messages as described in this chapter.CNE






No good mapping, but could it contribute to Media.status?OBX-23.00.00 - Performing Organization NameThis field contains the name of the organization/service responsible for performing the service.XON

Media.operatorThe person who generated the imageReference (including to an Organization)

Only one operator (0..1) can be included in the Media resourceOBX-24.00.00 - Performing Organization Address

This field contains the address of the organization/service responsible for performing the service.

XAD

Media.operatorThe person who generated the imageReference (including to an Organization)

Only one operator (0..1) can be included in the Media resourceOBX-25.00.00 - Performing Organization Medical DirectorThis field contains the medical director of the organization/service responsible for performing the service.XCN






No apparent mappingOBX-26.00.00 - Patient Results Release CategoryThis field contains instructions on whether to share the results with the patient, and if so how.ID






Could be related to security labelsOBX-27.00.00 - Root CauseThis element contains the reason code indicating the root cause for the reissue of a previously released lab report.CWE






No apparent mappingOBX-28.00.00 - Local Process ControlThis element contains information intended to be used for locally defined processing, particularly process control/status type informationCWE






No apparent mappingOBX-29.00.00 - Observation TypeThis field indicates the type of observation to enable systems to distinguish between observations sent along with an order, versus observations sent as the result to an order.ID






No apparent mappingOBX-30.00.00 - Observation Sub-TypeThe result sub-type provides further classification of OBX-29 Observation Type.ID






No apparent mapping