FHIRPath Evaluator

Query any FHIR R4 resource live

{
  "resourceType": "Patient",
  "id": "p1",
  "active": true,
  "gender": "male",
  "birthDate": "1980-01-01",
  "name": [
    {
      "use": "official",
      "family": "Smith",
      "given": [
        "John",
        "Q"
      ]
    },
    {
      "use": "nickname",
      "family": "Smith",
      "given": [
        "Johnny"
      ]
    }
  ],
  "address": [
    {
      "city": "Boston",
      "state": "MA",
      "postalCode": "02101"
    }
  ]
}

collection · 3 items

[0]

"John"

[1]

"Q"

[2]

"Johnny"

What is the FHIRPath Evaluator?

FHIRPath is the official query language for FHIR resources — the same one used inside FHIR profiles to define invariants. This evaluator is a scratchpad for testing FHIRPath expressions against any FHIR R4 resource directly in your browser.

Supported syntax

Path navigation: Patient.name.given, Bundle.entry.resource
Indexing: name[0].family
String & numeric literals: 'male', 120
Equality & comparison: =, !=, <, <=, >, >=
Logical: and, or, not()
Functions: exists(), empty(), count(), first(), last(), where(), ofType()
Type filter: Bundle.entry.resource.ofType(Patient), Patient is Patient

Want to inspect a Bundle?

Use the Bundle Visualizer to see entries, references, and dangling links at a glance.