{
  "resourceType": "CodeSystem",
  "status": "draft",
  "content": "complete",
  "name": "NexusEmrPreventionStatusCS",
  "id": "nexus-emr-prevention-status-cs",
  "title": "Prevention Status Code System",
  "description": "Nexus EMR Preventions product status codes (PRD: Preventions Phase 1, §02.04, as amended by the 2026-07-28 scope decision removing Pending).",
  "url": "https://fhir.apps.health/CodeSystem/nexus-emr-prevention-status-cs",
  "concept": [
    {
      "code": "completed",
      "display": "Completed",
      "definition": "The prevention was performed/administered at this clinic. Native derivation: Observation.status = final."
    },
    {
      "code": "completed-externally",
      "display": "Completed Externally",
      "definition": "The prevention was performed outside this clinic (external/remote provider). Functionally equivalent to completed for most reporting; tracked distinctly for in-depth reporting and automations. Native derivation: Observation.status = final. Analogous to Immunization.primarySource = false / reportOrigin (the Observation equivalent of a non-primary source); the external performer or source MAY additionally be carried via Observation.performer or a Provenance."
    },
    {
      "code": "refused",
      "display": "Refused",
      "definition": "The patient declined the prevention — a decided, concluded state. Native derivation: Observation.status = cancelled (best-effort; this extension is the source of truth for refusal-as-declined)."
    }
  ],
  "experimental": true,
  "caseSensitive": true,
  "count": 3
}