CQL Simulator

Teaching simulator · curated ELM only · zero network

Run pre-translated teaching libraries against synthetic patient bundles in the browser. Nothing is uploaded, nothing calls VSAC or a payer, and this is not live DTR — it is an education plane for seeing what curated ELM returns.

Teaching libraryRetrieve + ValueSet membership + Last(... sort by) — the DTR prepopulation shape shared by the payer library fixtures.Synthetic patient bundleSynthetic Patient + COPD Condition (J44.9) + LOINC 59408-5 Observation. Matches the Home Oxygen teaching ValueSets.

Source CQL (read-only)

library HomeOxygenTherapyPrepopulation version '1.0.0'
using FHIR version '4.0.1'
include FHIRHelpers version '4.0.1'
valueset "COPD Diagnoses": 'https://payer.example.org/fhir/ValueSet/copd-diagnoses'
valueset "Oxygen Saturation Tests": 'https://payer.example.org/fhir/ValueSet/spo2-observations'
context Patient
define "Copd Diagnoses":
  [Condition: "COPD Diagnoses"]
define "Resting SpO2 Results":
  [Observation: "Oxygen Saturation Tests"]
define "Most Recent Resting SpO2":
  Last("Resting SpO2 Results" O sort by effective)

Results

Pick a library and bundle, then Run — or use a curated scenario.