FHIR JSON Resource Validation: Online Tool for Development and QA
Free FHIR Validator Online | Validate FHIR JSON Resources - Efneze
Summary
This article explains a free online tool that validates FHIR JSON resources directly in the browser. Using this tool helps identify structural issues (such as syntax errors) before sending data to an API or storing it in a data lake, supporting development and quality assurance processes.
Details
The described FHIR validator operates client-side within the browser, which is advantageous because it allows validation of sensitive PHI or credentials without transmitting them to external servers. The tool supports major resource types including Patient, Observation, Encounter, Condition, and MedicationRequest, checking for structural integrity and field consistency required by each resource. FHIR validation is crucial for developers during the API call attempt phase or when performing data mapping (e.g., HL7 to FHIR conversion), helping identify structural issues early on. Common errors that can be pinpointed include malformed JSON syntax, missing mandatory fields, or insufficient references. Furthermore, the article differentiates between FHIR as a resource-based API standard and HL7 v2 as a pipe-delimited messaging standard widely used in hospitals. It notes that while this tool is optimized for rapid inspection during development, production systems must validate against official implementation guides and profiles.
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