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Since 1987 the standard has been updated regularly, resulting in more than ten iterations. The v2.x standards are backward compatible, meaning a message based on version 2.3 will be understood by an application that supports version 2.6. HL7 v2.x messages use a non-XML encoding syntax based on segments and one-character delimiters. [5]
An XML element in a CDA supports unstructured text, as well as links to composite documents encoded in pdf, docx, or rtf, as well as image formats like jpg and png. [ 3 ] It was developed using the HL7 Development Framework (HDF) and it is based on the HL7 Reference Information Model (RIM) and the HL7 Version 3 Data Types.
The HL7 Consolidated Clinical Document Architecture (C-CDA) is an XML-based markup standard which provides a library of CDA formatted documents. Clinical documents using the C-CDA standards are exchanged billions of times annually in the United States.
FHIR builds on previous data format standards from HL7, like HL7 version 2.x and HL7 version 3.x. But it is easier to implement because it uses a modern web-based suite of API technology, including a HTTP -based RESTful protocol, and a choice of JSON , XML or RDF for data representation. [ 1 ]
In the opinion of HL7 and its members, the CDA CCD combines the benefits of ASTMs Continuity of Care Record (CCR) and the HL7 Clinical Document Architecture (CDA) specifications. It is intended as an alternate implementation to the one specified in ASTM ADJE2369 for those institutions or organizations committed to implementation of the HL7 ...
The HL7 Services-Aware Interoperability Framework Canonical Definition (SAIF-CD) [3] provides consistency between all artifacts, and enables a standardized approach to enterprise architecture (EA) development and implementation, and a way to measure the consistency.
HL7 Sweden is the Swedish subsidiary organization representing HL7 in Sweden. HL7 Sweden started in late 2005, and today consists of about twenty members from government, organizations and businesses. HL7 Sweden is a non-profit organization open to all individuals, companies and organizations operating in Sweden. Purpose of the HL7 Sweden
These CEN ISO/IEEE 11073 standards have been developed in close coordination with other standards development organisations, including IEEE 802, IHTSDO, IrDA, HL7, DICOM, and CLSI. Memoranda of Understanding with IHE, IHTSDO, and HL7; and (through ISO) close liaison with Continua Health Alliance assist still wider integration.