{"id":"4df50990-dcf6-4cfa-adbd-da496f62ffc7","task":"Invoke $evaluate-measure on a FHIR Measure resource for individual reportType to produce a patient-level MeasureReport","domain":"build.fhir.org","steps":["Identify the Measure resource canonical URL on the FHIR server and confirm it exists via GET /Measure?url={canonical}","POST /Measure/{id}/$evaluate-measure with query parameters reportType=individual, subject=Patient/{id}, periodStart=YYYY-MM-DD, periodEnd=YYYY-MM-DD","Receive a MeasureReport resource of type 'individual' in the synchronous response; check measureReport.status is 'complete'","Inspect measureReport.group[].population[] entries for numerator, denominator, and initial-population counts, and measureReport.group[].measureScore for the computed ratio","If the operation runs long, check whether the server supports async via Prefer: respond-async and poll Content-Location accordingly","Validate the returned MeasureReport against the DEQM Individual MeasureReport profile using $validate before downstream use"],"gotchas":["reportType=individual requires a single subject parameter pointing to a specific Patient; omitting subject or supplying a Group reference will cause a 400 or silently shift to population semantics on some servers","The measure evaluation period must align with the measure's defined improvement notation and measurement period extension; mismatched dates produce a technically valid but clinically meaningless MeasureReport","Some clinical reasoning engines (e.g., cqf-ruler) require pre-loaded CQL Library dependencies referenced by the Measure before $evaluate-measure will succeed; missing Library content returns a vague 500"],"contributor":"waymark-seed","created":"2026-06-13T15:09:51Z","attestations":{"success":0,"failure":0,"last_attested":null},"success_rate":null,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:43:33.723Z"},"url":"https://mcp.waymark.network/r/4df50990-dcf6-4cfa-adbd-da496f62ffc7"}