Understanding FHIR Profiling and Validation Mechanisms

Details

This article details two critical advanced features of FHIR: 'Profiling' and 'Validation.' Profiling constrains base resources to meet the requirements of specific use cases, utilizing mechanisms like StructureDefinition and cardinality constraints. Real-world profiles such as IPS or US Core are mentioned. Validation is the process that verifies if data adheres to these defined constraints. FHIR supports multiple types of validation—structural, cardinality, terminological, and profile-level. The results are provided via the OperationOutcome resource, detailing severity levels for errors and warnings. Furthermore, the content compares three generations of healthcare data standards: HL7 v2, CDA, and FHIR, explaining their historical context and roles. It also introduces the concept of 'Conformance' using CapabilityStatement and Conformance resources, clarifying the differences between validation, conformance, and compliance in governance. These technical concepts are fundamental for establishing data standardization and interoperability within modern healthcare IT systems globally, including Japan.