What is HL7v2 to FHIR Mapping?

HL7v2 to FHIR mapping is the process of transforming legacy interface messages — ADT admissions, ORU lab results, ORM orders — into modern FHIR R4 resources like Patient, Observation, and Encounter. Interoperall's mapping builder gives you a visual canvas where each source field (an HL7v2 segment-field-component, a JSON path, a CSV column, or a SQL column) is wired to a target FHIR element with explicit, inspectable rules.

A mapping acts as the Façade between your inbound traffic and a FHIR API: define it once, version it with revisions, and reuse it across every message that arrives. Mappings run in your browser, so test payloads — including PHI — never leave your device.

One Façade for Many Sources

HL7v2: map MSH, PID, PV1, OBX and any segment to FHIR resources and elements.
JSON: wire arbitrary JSON paths from REST payloads into FHIR shapes.
CSV: turn flat exports and registries into structured FHIR resources.
SQL: project relational columns straight into FHIR R4.

Start From a Working Template

Skip the empty canvas — fork a curated, vendor-aware starter from the Mapping Library and adapt it to your feed. Each mapping is versioned, shareable, and can be validated against your FHIR conformance rules before it ever touches production.