Thilo,

> IMHO (b) and (c) are not distininct as CDA R2 currently already supports
> "structured narrative" (as in Ian's post) via the <originalText> tag from a
> Level 3 entry to a Level 1 text via a reference: se

Yes, I meant they were distinct in terms of support in openEHR - that
(b) is perhaps easier to support than (c). But you are right that
(c) is a superset of functionality that is currently supported by
CDA and hence to covering CDA fully would cover (b) and (c)..

> required to be faithfully displayed by everybody.  Therefore, I would think,
> in case structured entries contradict the narrative (through secondary
> corrections as Heath depicted) the narrative "wins".

I agree that the narrative form "wins" but I think the HL7 people
would be horrified by the thought that CDA structured content
was generating textual content which could then be secondarily
changed - it is a clearly broken use case and noone would
design new software that way - but I understand that there
are some legacy systems in Australia that do it this way and
that Ocean needs to come up with solutions around this. But
I am quite keen that solutions to this particular outlying
use case don't impact on solutions to (b) and (c) unless
we all understand the ramifications.

Andrew

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