MedicationStatement resource (FHIR R4)

MedicationStatement is the FHIR R4 resource for a record of a medication that is being consumed by a patient.

Resource	MedicationStatement
FHIR version	R4 (4.0.1)
Canonical URL	http://hl7.org/fhir/StructureDefinition/MedicationStatement
Required elements	status (1..1), medication[x] (1..1), subject (1..1)

Example

{
  "resourceType": "MedicationStatement",
  "id": "medicationstatement-757e49306f471b14301bb1d462e439bd",
  "status": "active",
  "medicationCodeableConcept": {
    "text": "Synthetic value"
  },
  "subject": {
    "reference": "Patient/patient-7550740fe287c434b6437cad2a91dbed"
  }
}

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

Validation context

strict pidgeon validate grades a MedicationStatement 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)

This answer, in your terminal

pidgeon lookup MedicationStatement

Wire it into your AI agent:

claude mcp add pidgeon -- npx -y @pidgeonhealth/mcp

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