📖 FHIR is a standard
A shared language for healthcare information
A standard is a published set of definitions and rules that people and organizations can use in the same way. Familiar examples include standard units of measurement, country codes, and date formats.
FHIR (Fast Healthcare Interoperability Resources) is a healthcare data standard published by HL7 International. It defines reusable data structures called resources, common data types and terminology patterns, and several ways to exchange the resulting information.
For example, two systems can use the Patient resource as a shared starting point for representing a person’s administrative and demographic information. That common structure reduces ambiguity and the amount of custom mapping needed between systems.
A standard supports interoperability; it does not guarantee it
FHIR gives implementers a common framework, but using FHIR does not by itself ensure that:
- the source data is complete or clinically correct;
- both systems use the same FHIR version, profile, or codes;
- the receiver interprets every element in the intended way;
- no information is altered or lost during a wider workflow;
- the deployment is secure; or
- the organization meets its legal and regulatory obligations.
Real interoperability also requires an agreed implementation guide, terminology, validation rules, mapping where needed, security controls, governance, testing, and reliable operations.
How FHIR is developed
FHIR is developed through HL7’s standards process with contributions from healthcare professionals, patients, implementers, vendors, researchers, public bodies, and other stakeholders. HL7 work groups are responsible for different parts of the specification.
The specification therefore provides a shared technical foundation. Each real project still has to agree which parts of that foundation it uses and how it will protect and govern the exchanged information.