Selecting clinical & workflow resources

Medium34 minutes03 · Modeling

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A laboratory workflow uses ServiceRequest for the order, Specimen for the collected sample, Observation for a result and DiagnosticReport for the report. Distinct hospital objects show why these related resources have separate responsibilities and link through references. — Visual guide · Choose resources by their jobOpen full-size image

START HERE

Choose the smallest correct set of resources for a real workflow.

Real-World Example

A potassium test from order to result

Use ServiceRequest for the clinician order, Specimen for the collected sample, Observation for the potassium result, and DiagnosticReport to group the laboratory report.

What You Will Learn

Separate orders from events and definitions
Model clinical statements with correct resources
Use Provenance, AuditEvent and Task for their intended roles

Step-by-Step Explanation

Classify the thing
Is it a person/thing, a request, an event that happened, a definition, or workflow coordination? This narrows the resource family.
Respect boundaries
MedicationRequest orders therapy; MedicationAdministration records administration. ServiceRequest orders a lab; Observation records the result.
Link, do not nest everything
References preserve independent identity and lifecycle. Backbone elements only exist inside their owning resource.

SAMPLE FHIR MESSAGE

Inspect and practice

{
  "resourceType": "Patient",
  "id": "ronaldo",
  "identifier": [
    {
      "system": "https://gotham.example.org/mrn",
      "value": "GMH-1007"
    }
  ],
  "name": [
    {
      "family": "Ronaldo"
    }
  ]
}

Key Concept / Interview Takeaway

Words such as “requested,” “performed,” “dispensed,” and “reported” reveal lifecycle and resource choice.

LESSON KNOWLEDGE CHECK

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Selecting clinical & workflow resources

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A potassium test from order to result

Classify the thing

Respect boundaries

Link, do not nest everything