Purpose
Reference-laboratory results cross transport, identity, code-mapping, reconciliation, correction, and delivery boundaries where silent ambiguity is unsafe.
Science systems / 2026
ARUP-VistA Result Interface
Prototype middleware for receiving HL7 sendout results, normalizing them, reconciling them against a simulated LIS, and routing exceptions into an auditable queue.
prototypeFastAPI + HL7 ORU R01 + PydanticCanonical result model
My role
System designer, domain expert, and engineer
Status
prototype
Evidence
documented
Methods
- FastAPI
- HL7 ORU R01
- Pydantic
- SQLAlchemy
- Reconciliation scoring
- Audit events
Outputs
- Canonical result model
- Exception queue
- VistA-oriented output simulation
Result
A production-style local prototype covering twelve normal, corrected, duplicate, missing-data, mapping, and mismatch scenarios.
Implementation
How it works
FastAPI services isolate inbound transport, HL7 parsing, canonical result construction, validation, mapping, reconciliation, transformation, delivery simulation, and exception handling.
The repository contains a scenario corpus, canonical schemas, persistence models, API contracts, a server-rendered operations console, and unit and integration tests. It is not connected to a production LIS.