Healthcare Data Sources

Various different data formats are available through OneRecord API. OneRecord converts older data formats into the newest and most reliable formats, ensuring that healthcare data is consistently standardized and easily accessible. This page provides an overview of the Fast Healthcare Interoperability Resources (FHIR) and Consolidated Clinical Document Architecture (C-CDA) data formats, and also allows examples to be downloaded.

To understand the differences between FHIR and IHE, See Partner Networks

Data from FHIR Resources

R4 (Revision 4) is the most widely adopted version of the HL7 FHIR standard. It is a modern and flexible data format designed for exchanging healthcare information between different systems and applications. OneRecord API fully supports R4 FHIR data, and automatically converts older FHIR versions to R4 to ensure compatibility with modern systems.

To learn more about the R4 FHIR standard and its specifications, please visit the official website of HL7 at hl7.org. OneRecord's goal is to provide backward compatibility while supporting the newest usable data formats. Requirements for a move to R5 are already being considered as standards advance.

FHIR Resources

OneRecord API provides access to a wide range of FHIR Resources.

For FHIR resource examples refer to the HL7 FHIR Resource list, each resource page has a list of examples HL7 FHIR Resource List

Data from CCDA Documents

The Consolidated Clinical Document Architecture (C-CDA) is a standard for the exchange of clinical documents in the healthcare industry. It was developed by the Health Level Seven International (HL7) standards organization and is widely used in the United States.

The C-CDA standard defines a set of templates and implementation guides that specify the structure and content of clinical documents, such as discharge summaries, progress notes, and lab results. These documents are intended to be exchanged electronically between different healthcare systems, allowing for the sharing of patient information across organizations and facilitating coordinated and continuous care.

C-CDA documents are typically encoded using the Extensible Markup Language (XML) format, making them machine-readable and interoperable. The standard includes guidelines for data elements, section headings, document structure, and vocabulary standards to ensure consistency and meaningful exchange of clinical information.

By adhering to the C-CDA standard, healthcare providers can share patient data more effectively, enhance care coordination, and improve clinical decision-making. C-CDA documents can be exchanged through various methods, including electronic health record (EHR) systems, health information exchanges (HIEs), and other interoperable systems.

OneRecord API allows you to retrieve C-CDA documents through a Demographics Query to IHE-based networks like Commonwell and Carequality. Once you have retrieved the appropriate documents from the demographics query response, you can download the CCDA document in either XML format through OneRecord API.

See the Demographics Query Guide

For specifics on CommonWell, See the official CommonWell Documentation
For specifics on Carequality, See the official Carequality Documentation

For C-CDA examples refer to the HL7 CDA Example Search site