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HL7 V2 | TRIGGER EVENT O01

ORM^O01: Order message (also RDE, RDS, RGV, RAS)

The general order message, used for many kinds of orders in older interfaces. Later versions of HL7 v2 split orders into more specific messages, such as OML for laboratory orders and OMG for general clinical orders.

Message type
ORM · Pharmacy/treatment order message
Trigger event
O01
Message structure
ORM_O01 · per HL7's current table 0354; older versions sometimes paired events differently
In MSH-9
ORM^O01^ORM_O01

Segments in ORM_O01 and their FHIR resources

The segments of the ORM_O01 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.

SegmentNameRequiredFHIR resources
MSHMessage HeaderYesBundle MessageHeader Provenance
[{ NTE }]Notes and Comments (for Header)No · repeats—
[PATIENT beginNo—
PIDPatient IdentificationYesPatient Provenance
[ PD1 ]Additional DemographicsNoPatient Observation
[{ NTE }]Notes and Comments (for Patient ID)No · repeats—
[PATIENT_VISIT beginNo—
PV1Patient VisitYesEncounter Basic Patient Coverage
[ PV2 ]Patient Visit- Additional InfoNoEncounter
[{INSURANCE beginNo · repeats—
IN1InsuranceYesCoverage
[ IN2 ]Insurance Additional InfoNoCoverage
[ IN3 ]Insurance Add'l Info – Cert.NoCoverage
[ GT1 ]GuarantorNo—
[{ AL1 }]Allergy InformationNo · repeatsAllergyIntolerance
{ORDER beginYes · repeats—
ORCCommon OrderYesServiceRequest Task Provenance
[ORDER_DETAIL beginNo—
<Yes—
OBROrder Detail Segment OBR, etc.NoServiceRequest SupplyRequest
RQDRequisition DetailNo—
RQ1Requisition Detail-1No—
RXOPharmacy/Treatment OrderNoMedicationRequest
ODSDietary Orders, Supplements, and PreferencesNoSupplyRequest
ODTDiet Tray InstructionsNo—
[{ NTE }]Notes and Comments (for Detail)No · repeatsServiceRequest
[ CTD ]Contact Data 1No—
[{ DG1 }]DiagnosisNo · repeatsServiceRequest
[{OBSERVATION beginNo · repeats—
OBXObservation/ResultYesObservation
[{ NTE }]Notes and Comments (for Results)No · repeats—
[{ FT1 }]Financial TransactionNo · repeats—
[{ CTI }]Clinical Trial IdentificationNo · repeats—
[ BLG ]Billing SegmentNo—

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.