HL7 V2 | TRIGGER EVENT R01
ORU^R01: Unsolicited transmission of an observation message
The standard results message: lab results, radiology and pathology reports, and other observations. OBR describes the order or report, and each OBX carries one result value, with units, reference range and abnormal flag.
- Message type
ORU· Unsolicited transmission of an observation message- Trigger event
R01- Message structure
ORU_R01· per HL7's current table 0354; older versions sometimes paired events differently- In MSH-9
ORU^R01^ORU_R01- Response
ACK· General acknowledgment message
Segments in ORU_R01 and their FHIR resources
The segments of the ORU_R01 structure as listed in the HL7 v2-to-FHIR Implementation Guide, with the FHIR resources each one maps to. Square brackets mean optional and braces mean the segment can repeat. Indented segments belong to the group above them; “required” means required whenever that group is present.
| Segment | Name | Required | FHIR resources |
|---|---|---|---|
MSH | Message Header | Yes | Bundle MessageHeader Provenance |
[{ SFT }] | Software Segment | No · repeats | Provenance |
[UAC] | User Authentication Credential | No | — |
| PATIENT_RESULT group | Yes · repeats | ||
| PATIENT group | No | ||
PID | Patient Identification | Yes | Patient Provenance |
[PD1] | Additional Demographics | No | Patient Observation |
[{PRT}] | Participation (for Patient) | No · repeats | PractitionerRole RelatedPerson |
[{NTE}] | Notes and Comments | No · repeats | — |
[{NK1}] | Next of Kin/Associated Parties | No · repeats | RelatedPerson Patient |
[{ARV}] | Access Restrictions | No · repeats | — |
| PATIENT_OBSERVATION group | No · repeats | ||
OBX | Observation (for Patient ID) | Yes | Observation |
[{PRT}] | Participation (Observation Participation) | No · repeats | Device Observation PractitionerRole |
| VISIT group | No | ||
PV1 | Patient Visit | Yes | Encounter Basic Patient Coverage |
[PV2] | Patient Visit - Additional Info | No | Encounter |
[{PRT}] | Participation (for Patient Visit) | No · repeats | PractitionerRole |
| ORDER_OBSERVATION group | Yes · repeats | ||
| COMMON_ORDER group | No | ||
ORC | Order common | Yes | DiagnosticReport ServiceRequest |
[{PRT}] | Participation (for Observation) | No · repeats | PractitionerRole |
| ORDER_DOCUMENT group | No | ||
OBX | Observation containing Document | Yes | — |
[{PRT}] | Participation | No · repeats | — |
TXA | Transcription Document Header | Yes | — |
OBR | Observations Request | Yes | DiagnosticReport Specimen ServiceRequest |
{[NTE]} | Notes and comments | No · repeats | — |
[{PRT}] | Participation (for Observation) | No · repeats | PractitionerRole |
| TIMING_QTY group | No · repeats | ||
TQ1 | Timing/Quantity | Yes | — |
[{TQ2}] | Timing/Quantity Order Sequence | No · repeats | — |
[CTD] | Contact Data | No | — |
| OBSERVATION group | No · repeats | ||
OBX | Observation related to OBR | Yes | Observation |
[{PRT}] | Participation (Observation Participation) | No · repeats | Device Observation PractitionerRole |
{[NTE]} | Notes and comments | No · repeats | Observation |
[{FT1}] | Financial Transaction | No · repeats | — |
{[CTI]} | Clinical Trial Identification | No · repeats | — |
| SPECIMEN group | No · repeats | ||
SPM | Specimen | Yes | Specimen |
| SPECIMEN_OBSERVATION group | No · repeats | ||
OBX | Observation (for Patient ID) | Yes | Observation |
[{PRT}] | Participation (Observation Participation) | No · repeats | — |
[DSC] | Continuation Pointer | No | — |
Source: HL7 Terminology (THO) 7.4.0 and the HL7 v2-to-FHIR Implementation Guide 1.0.0, published by HL7 International under CC0. Check your trading partner's specification for the values they actually send.