Originally posted by: mhillesheim

Hello,
First off, I'm using the HL7 packs which will allow me to map from my input message to an HL7 output.

For those not familiar with the HL7 type tree, it contains message segments that are reused for many types of message formats. For instance, there is a segment that defines the message header, a segment that defines the type of message and even segements that contain information about the person/patient -- all of which are reused across just about every single output message.

The biggest issue I have is most of these data structures will contain the exact same data mappings from message to message. How do I avoid not making specific mappings, of the same data structrures, every single message?

What happens in the future when we make a change to the data or add additional data to the structure. I want to make the change in one place and have it reflected to every message rather then having to make a mapping change for every single message type.

Thanks!
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Originally posted by: repanzer1

I don't understand your questions. I have worked a little bit with HL7, but a type tree is a type tree, and I understand how segments are reused, like a patient data segment is the same in every message that uses the patient segment, and if you change the patient segment, like adding a field for example, it will change every message.

That being said, I do not understand this;

"How do I avoid not making specific mappings, of the same data structrures, every single message?"

Can you give an example, like, I want to map "Bob Smith" into this segment for this message type, but don't want "Bob Smith" elsewhere or something like that?

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