Clinical Data Standards

Clinical Data Standards Reference

Technical reference for healthcare data standards, interoperability specifications, and clinical terminology systems. Covering HL7 FHIR, DICOM, HL7 v2.x, and the regulatory frameworks that govern health information exchange.

FHIR OverviewInteroperability Guide

Standards

The core data standards used for clinical data exchange, medical imaging, and healthcare messaging.

HL7 FHIR

R4 / R5

Fast Healthcare Interoperability Resources. RESTful API standard for exchanging electronic health records using JSON, XML, and RDF formats.

DICOM

PS3.x 2024

Digital Imaging and Communications in Medicine. Standard for handling, storing, printing, and transmitting medical imaging data.

HL7 v2.x

v2.5.1 / v2.9

HL7 Version 2 messaging standard. Pipe-delimited message format widely deployed in hospital information systems for ADT, orders, and results.

Guides

In-depth guides on healthcare interoperability requirements and clinical terminology systems.

Interoperability

ONC regulations, TEFCA framework, information blocking rules, and the 21st Century Cures Act provisions that shape healthcare data exchange.

Terminology Systems

ICD-10, SNOMED CT, LOINC, RxNorm, CPT, and NDC -- the code systems used to represent clinical concepts in structured data.

Quick References

Lookup tables for FHIR resources, HL7 message types, and clinical terminologies.

FHIR Resource Reference

All common FHIR resources grouped by category with maturity levels, descriptions, and typical use cases.

HL7 Message Reference

HL7 v2.x message types and trigger events including ADT, ORM, ORU, SIU, and MDM with segment structures.

Disclaimer: This site provides technical reference information about healthcare data standards and interoperability specifications. It does not constitute professional advice. Standards are maintained by their respective organizations (HL7 International, NEMA/DICOM, ONC) and are subject to revision. Consult the official specifications for authoritative guidance.