Name Flags Card. Type Description & Constraints doco
. . DiagnosticRequest DomainResource A request for a diagnostic service
. . . identifier Σ 0..* Identifier Identifiers assigned to this order
. . . definition Σ 0..* Reference( Any) Protocol or definition
. . . basedOn Σ 0..* Reference( Any) What request fulfills
. . . replaces Σ 0..* Reference( Any) What request replaces
. . . requisition Σ 0..1 Identifier Composite Request ID
. . . status ?! Σ 1..1 code draft | active | suspended | completed | entered-in-error | cancelled
RequestStatus ( Required)
. . . intent ?! Σ 1..1 code proposal | plan | original-order | reflex-order
RequestIntent ( Required)
. . . priority Σ 0..1 code routine | urgent | asap | stat
RequestPriority ( Required)
. . . code Σ 1..1 CodeableConcept What’s being requested/ordered
LOINC Diagnostic Request Codes ( Preferred)
. . . subject Σ 1..1 Reference( Patient | Group | Location | Device) Individual the test is ordered for
. . . context Σ 0..1 Reference( Encounter | EpisodeOfCare) Encounter or Episode during which request was created
. . . occurrence[x] Σ 0..1 When testing should occur
. . . . occurrenceDateTime dateTime
. . . . occurrencePeriod Period
. . . . occurrenceTiming Timing
. . . authoredOn Σ 0..1 dateTime Date request signed
. . . requester Σ 0..1 Reference( Device | Practitioner | Organization) Who/what is requesting diagnostics
. . . performerType Σ 0..1 CodeableConcept Performer role
Participant Roles ( Example)
. . . performer Σ 0..1 Reference( Practitioner | Organization | Patient | Device | RelatedPerson) Requested perfomer
. . . reasonCode Σ 0..* CodeableConcept Explanation/Justification for test
Condition/Problem/Diagnosis Codes ( Example)
. . . reasonReference Σ 0..* Reference( Condition | Observation) Explanation/Justification for test
. . . supportingInformation 0..* Reference( Any) Additional clinical information
. . . note 0..* Annotation Comments
. . . relevantHistory 0..* Reference( Provenance) Request provenance

doco Documentation for this format