Interoperability for administrators: HL7 and FHIR in plain English
No hospital runs on a single system. There's the management platform, the lab system, radiology, the insurance interface, the analytics tools — and they all need to talk to each other. The umbrella word for "talking to each other" is interoperability, and two terms dominate the conversation: HL7 and FHIR. You don't need to be an engineer to make good decisions here. You need to understand what they're for.
#Why interoperability matters to you, specifically
When systems don't share data, people fill the gap — re-typing the same patient details into three systems, carrying printouts between departments, reconciling numbers that should already agree. Every one of those manual bridges is slow and a chance to introduce an error. Interoperability replaces the human bridge with an automatic one. That's the entire point, and it's a deeply practical one.
#HL7: the long-established standard
HL7 (Health Level Seven) is a long-standing family of standards for exchanging healthcare information — the established language hospital systems have used to pass messages like "this patient was admitted" or "these lab results are ready." It's mature and widely supported. If a system can't speak HL7 at all, that's a real warning sign about how well it will fit into an existing hospital.
#FHIR: the modern, web-friendly approach
FHIR (Fast Healthcare Interoperability Resources) is the newer standard, built on the same web technologies that power modern apps. It models healthcare information as clean, reusable "resources" — a Patient, an Appointment, a Medication — that systems can request and share over standard web APIs. In practice, FHIR makes it easier and faster to connect modern applications, which is why it's increasingly the expectation rather than the bonus.
You don't need to read an HL7 message or write a FHIR query. You do need to insist your systems can.
#The questions to ask a vendor
You can evaluate interoperability without technical depth, just by asking the right things:
- "Which standards do you support — HL7, FHIR, both?"
- "Show me a real integration you've done with a lab or insurance system."
- "Can we export our own data in a standard format, whenever we want?"
- "What happens to our data if we ever leave?"
That last pair matters as much as the first. A system you can connect to but never get your data out of is a subtler form of lock-in.
#Interoperability is also future-proofing
The systems you'll want to connect in five years may not exist yet. A platform built on open standards can absorb them; a closed one will fight you every time. Choosing for interoperability isn't only about today's lab interface — it's about keeping your options open for everything you'll want to add later.
#The bottom line
Treat interoperability as a first-class requirement, not a technical afterthought buried on page nine of the spec. A hospital platform that speaks HL7 and FHIR fluently, and lets you export your own data freely, slots into the ecosystem you already have and the one you'll build next. One that doesn't will quietly become an island — and islands, in healthcare IT, are expensive places to be stranded.