Issues

• Observations: same LOINC code exported with different units or with both numeric and text TYPE

  synthetichealth/synthea#1731 · Filter by author eduardoospino5562001 opened on Oct 2, 2026

• Blood pressure: baseline does not depend on age and drug effects add up, so treated hypertensive patients end up below the general population

  synthetichealth/synthea#1730 · Filter by author eduardoospino5562001 opened on Oct 2, 2026

• STEMI, NSTEMI and unstable angina never end: no ConditionEnd in the heart pathways

  synthetichealth/synthea#1729 · Filter by author eduardoospino5562001 opened on Oct 2, 2026

• hypertension_medication: losartan 25 MG (979485) has no entry in htn_drugs.csv, so it does not lower blood pressure

  synthetichealth/synthea#1728 · Filter by author eduardoospino5562001 opened on Oct 2, 2026

• Add metadata to sample data exports

  synthetichealth/synthea#1727 · Filter by author dehall opened on Oct 1, 2026
  1

• CSV exporter does not return a column "System"

  bug
  synthetichealth/synthea#1726 · Filter by author ioannousolon opened on Oct 1, 2026
  1

• claims_transactions.PATIENTINSURANCEID references plans missing from payer_transitions (plans ended before 1970)

  synthetichealth/synthea#1725 · Filter by author eduardoospino5562001 opened on Sep 29, 2026

• Annual wellness state can select a closed historical encounter after delay rewind

  synthetichealth/synthea#1720 · Filter by author astruebi opened on Sep 24, 2026

• CSV SYSTEM column depends on whether FHIR export is enabled

  synthetichealth/synthea#1703 · Filter by author AltangerelG opened on Sep 14, 2026
  2

• FHIR R4 allergy export loses reaction severity by mutating a HashMap key.

  bug
  synthetichealth/synthea#1702 · Filter by author fmatten opened on Sep 14, 2026

• Proposal: stable de-identified export manifest for downstream benchmarks

  synthetichealth/synthea#1700 · Filter by author Frankie-Xu opened on Sep 12, 2026
  1

• Release v4.0.0 jar identifies itself as v3.4.0-18-ga07a65555 and stamps that into every record

  bug
  synthetichealth/synthea#1698 · Filter by author fmatten opened on Sep 7, 2026

• CSV export rounds numeric observation values to one decimal; FHIR export of the same run does not

  bug
  synthetichealth/synthea#1697 · Filter by author fmatten opened on Sep 7, 2026

• CSV export drops the panel observation itself; only its components are written

  bug
  synthetichealth/synthea#1696 · Filter by author fmatten opened on Sep 7, 2026

• HbA1c and serum glucose are generated independently, so they contradict each other (r = 0.03 across 492 patients)

  bug
  synthetichealth/synthea#1694 · Filter by author shabiel opened on Aug 19, 2026
  4

• Medication impacts drive HbA1c below physiological limits (values as low as 2.39%, theoretically negative)

  bug
  synthetichealth/synthea#1693 · Filter by author shabiel opened on Aug 19, 2026
  1

• Proposal: Anatomic Pathology Module for Synthetic Specimen & Diagnostic Report Generation

  synthetichealth/synthea#1673 · Filter by author gershkovich opened on Jun 18, 2026

• Outdated dependencies causing vulnerabilities

  bug
  synthetichealth/synthea#1654 · Filter by author williamdanielani opened on May 1, 2026

• 1

  synthetichealth/synthea#1653 · Filter by author adrenolitik opened on Apr 26, 2026
  1

• Flexporter should be supported for all FHIR R4 exporters

  synthetichealth/synthea#1651 · Filter by author dehall opened on Mar 19, 2026

• claims_transactions.csv output has duplicate primary keys

  bug
  synthetichealth/synthea#1648 · Filter by author dvdrndlph opened on Mar 1, 2026
  2

• Generate a timeframe of data for one or more conditions

  synthetichealth/synthea#1634 · Filter by author jakehova opened on Nov 19, 2025
  1

• Dev env Docker image

  synthetichealth/synthea#1614 · Filter by author Teagum opened on Sep 19, 2025
  1

• ICD10 codes

  synthetichealth/synthea#1579 · Filter by author Ritakoubeh opened on May 20, 2025
  1

• What default FHIR version does Synthea use to generate resources?

  synthetichealth/synthea#1576 · Filter by author HimanshuKumarPal opened on May 8, 2025
  1