v2.x was a custom format (barebones text - all coded and separated by a pipe with headers and multiple segments etc.) v2.x looks like this:īefore you get too excited, the true customization comes in the form of the content of the HL7 message.whereas v3.x has additional features for use by informaticists and for government reporting requirements. v2.x was primarily meant for clinical communications - medical orders, patient registration etc.The key differences between an HL7 v2 and HL7 v3 message are as follows: Hl7 Message Viewer For Mac Os The current version of HL7 is v3, however, older versions exist and make up the bulk of the standard used today primarily because of the large number customizations that have been done to each HL7 message. HL7 v2 message structure is complex, flat, and delimited. The protocol selected to make this happen was a traditional file transfer or a TCP/IP socket in both a real-time and batched fashion. The HL7 messaging protocol was designed to facilitate high volumes of pre-defined data to be shared across many applications reliably.
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