HL7 Variant Definition

[Kathy Young]

I have lab results that are coming in as:

{

OBX

[{NTE}]

}

I need to add a segment, ZL1. For each OBX, I need one ZL1, followed by whatever NTE segments are present.

Inbound —> Desired outbound — > Actual outbound

OBX|2|             OBX|2|                       OBX|2|

                       ZL1|1|                        ZL1|1|

NTE|1|              NTE|1|                        NTE|1|

NTE|2|              NTE|2|                        ZL1|2|

                                                        NTE|2|

My HL7 variant looks like this:

{

OBX

ZL1

[{NTE}]

}

My translate is a nested iteration – for the OBX/ZL1/NTE group repeat, with a nested iteration for the NTE segment repeat.

What did I do wrong?

Topic

[Nathan Martin]

Well it looks right.  It seems like if the OBX is a required segment, at least an empty OBX would precede the second ZL1.

Are you sure your translation is using the outbound format like the one you show?

Did you save the format?

Did you cycle the process, or run the message through a test translation?

There aren’t any other procs deleting extra OBX’s are there…?

[Robert Milfajt]

What does your iterate look like?  I’ll bet that’s where the problem is.

Robert Milfajt
Northwestern Medicine
Chicago, IL

[Kathy Young]

Thanks to those with helpful hints. I did figure this out earlier today. You’re right, Bob, there was an iteration problem.

Since I have to conjure up the ZL1 segment, I had to add an IF statement before the ZL1 copy to say that I only want one ZL1 per OBX. The way the iteration was written at first was to keep looping through OBX->ZL1->NTE group for as many NTE’s as occurred.

Kathy

[Author]

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