CommunicationRequest resource (FHIR R4)

CommunicationRequest is the FHIR R4 resource for a request to convey information; e.g.

Example

{
  "resourceType": "CommunicationRequest",
  "id": "communicationrequest-ab73a01617fe6bb9379a209dcca2d706",
  "status": "active",
  "category": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/communication-category",
          "code": "reminder",
          "display": "Reminder"
        }
      ]
    }
  ],
  "priority": "routine",
  "medium": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/v3-ParticipationMode",
          "code": "PHONE",
          "display": "telephone"
        }
      ]
    }
  ],
  "subject": {
    "reference": "Patient/patient-L46A6EIB9J"
  },
  "payload": [
    {
      "contentString": "Notify the patient that updated visit instructions are available."
    }
  ],
  "authoredOn": "2026-07-01T12:00:00Z",
  "requester": {
    "display": "Care Coordination Desk"
  },
  "recipient": [
    {
      "display": "Patient Outreach Team"
    }
  ]
}

Generated by the Pidgeon engine: pidgeon generate CommunicationRequest --seed 20260722.

Validation context

• strict pidgeon validate grades a CommunicationRequest instance against the base R4 structure definition: missing required elements raise REQUIRED_FIELD_MISSING and cardinality violations raise CARDINALITY_MIN or CARDINALITY_MAX.(REQUIRED_FIELD_MISSING)
• strict Profile validation grades the same instance against an installed IG profile: profile cardinality findings carry FHIR-PROFILE-CARDINALITY and terminology binding findings carry FHIR-PROFILE-BINDING.(FHIR-PROFILE-CARDINALITY)