FQL is a query language that allows you to retrieve, filter and project data from any data source containing FHIR Resources. It brings the power of three existing languages together: SQL, JSON and FhirPath. It allows you to create tables and is useful for gaining insight and perform quality control.
| Name | Flags | Card. | Type | Description & Constraints |
|---|---|---|---|---|
  Communication | Σ | 0..* | DomainResource | A record of information transmitted from a sender to a receiver |
  id | Σ | 0..1 | id | Logical id of this artifact |
| meta | Σ | 0..1 | Meta | Metadata about the resource |
| implicitRules | ?! Σ | 0..1 | uri | A set of rules under which this content was created |
| language | 0..1 | code | Language of the resource content Binding: http://tools.ietf.org/html/bcp47 (required) | |
| text | I | 0..1 | Narrative | Text summary of the resource, for human interpretation |
| contained | 0..* | Resource | Contained, inline Resources | |
 extension | 0..* | Extension | Additional Content defined by implementations | |
| modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored |
| identifier | Σ | 0..* | Identifier | Unique identifier |
| category | Σ | 0..1 | CodeableConcept | Message category Binding: (unbound) (example) |
 sender | Σ | 0..1 | Reference(Device | Organization | Patient | Practitioner | RelatedPerson) | Message sender |
| recipient | Σ | 0..* | Reference(Device | Organization | Patient | Practitioner | RelatedPerson | Group) | Message recipient |
 payload | Σ | 0..* | BackboneElement | Message payload |
 id | 0..1 | id | xml:id (or equivalent in JSON) | |
| extension | 0..* | Extension | Additional Content defined by implementations | |
| modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored |
  content[x] | Σ | 1..1 | Reference(Resource), string, Attachment | Message part content |
| medium | Σ | 0..* | CodeableConcept | A channel of communication Binding: http://hl7.org/fhir/ValueSet/v3-ParticipationMode (example) |
| status | ?! Σ | 0..1 | code | in-progress | completed | suspended | rejected | failed Binding: http://hl7.org/fhir/ValueSet/communication-status (required) |
| encounter | Σ | 0..1 | Reference(Encounter) | Encounter leading to message |
| sent | Σ | 0..1 | dateTime | When sent |
| received | Σ | 0..1 | dateTime | When received |
| reason | Σ | 0..* | CodeableConcept | Indication for message Binding: (unbound) (example) |
| subject | Σ | 0..1 | Reference(Patient) | Focus of message |
| requestDetail | Σ | 0..1 | Reference(CommunicationRequest) | CommunicationRequest producing this message |
| Documentation for this format | ||||