FHIR and real-world data: the foundation for finding patients

Patient finding is only as good as the data underneath it. For rare disease, where the signal is subtle and spread across years of care, the data foundation matters more than the model on top. Two standards make a reliable foundation possible: FHIR and real-world data.

FHIR: a common shape for clinical data

HL7 FHIR (Fast Healthcare Interoperability Resources) is the modern standard for representing health information (patients, conditions, observations, medications, procedures) in a consistent, machine-readable format. Its value for patient finding is direct: a disease definition written once against standard FHIR resources can run against the records a health system already produces, with no custom data model to build first.

Real-world data: the longitudinal picture

“Real-world data” (RWD) is health data collected during routine care rather than in a controlled trial. Regulators have come to recognize its value: the FDA has an active framework for using real-world data and real-world evidence in regulatory decisions (FDA RWE program). For rare disease, RWD is what makes the subtle, longitudinal patterns of an undiagnosed patient visible at all.

Run the analytics where the data lives

A standards-based foundation enables a property that matters enormously for compliance and trust: you don’t have to move the data. Analysis can run inside the health system’s own governed environment, so protected health information stays put. That means:

• No migration project to start. Work with the FHIR and real-world data you already have.
• PHI stays inside your boundary, which matters for HIPAA-aligned work.
• Population-scale analysis. Query whole populations at once, not one chart at a time.

Standards in, reproducibility out

Standardization is also what makes results reproducible. When the inputs have a defined shape and the disease definition is governed (not a free-text prompt), the same query produces the same patients every time. Combine a FHIR-native, in-warehouse foundation with governed disease definitions, and patient finding becomes something you can both scale and stand behind.

That foundation is exactly what PathfindEHR™ is built on.

Sources

1. HL7 International, Fast Healthcare Interoperability Resources (FHIR).
2. U.S. Food & Drug Administration, Real-World Evidence.

This article is for general educational purposes and is not medical advice.