# Exchanging codified content via HL7

**Category:** [Technical (archive)](https://discourse.openehr.org/c/technical-archive/156)
**Created:** 2007-11-07 05:20 UTC
**Views:** 2
**Replies:** 1
**URL:** https://discourse.openehr.org/t/exchanging-codified-content-via-hl7/12649

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## Post #1 by @Greg_Caulton

So I have completed a first pass at parsing the OpenEHR content,
extracting some initial information I would import into to my
application\.  More work to be done but if you look at this text file
as a preliminary output from the process:

http://www.patientos.org/forum_temp/openehr.txt

My question is if I send the information out via HL7 in say OBX
segments, what 'code' would I assign to the data elements\.

For example if my message is sending the 'Anaesthetic evaluation and
history date/time of last liquid intake' \- is the unique,
interoperable identifier for that data element:

\[at0000\]/data\[at0001\]/items\[at0005\]/items\[at0006\]

thanks

Greg
http://www.patientos.org

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## Post #2 by @Heath_Frankel3

Greg,
Very interesting question, there is actually working being done within
Standards Australia to determine how to represent archetyped content in HL7
V2\.  This work is not yet complete, but your suggestion is one of the
options except the \[at0000\] is not required as all archetype root nodes have
this node ID\.  The code system \(3rd component of CE\) is the Archetype ID\.

Regards

Heath

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**Canonical:** https://discourse.openehr.org/t/exchanging-codified-content-via-hl7/12649
**Original content:** https://discourse.openehr.org/t/exchanging-codified-content-via-hl7/12649