Referencing repeating field

Hi all,

I’ve read through several posts addressing iteration questions and adding/removing repeating segments. I don’t believe that any of them address the question that I have.

I am looking to iterate through the Consulting Physician field (PV1-8). In this field there can be multiple physicians, and each physician can have multiple physician IDs. For example, consulting physician 1 can have an internal ID, an external ID and a National Provider Index (NPI) ID. Consulting physician 2 can have the same information. I would like to strip out all non-NPI IDs for each physician, leaving only the NPIs for each physician.

|001^ONE^PHYSICIAN^Internal~010^ONE^PHYSICIAN^External~100^ONE^PHYSICIAN^NPI~002^TWO^PHYSICIAN^Internal~020^TWO^PHYSICIAN^External~200^TWO^PHYSICIAN^NPI|

I have the logic to iterate through the repeated fields and identify the NPI. My question is simple: can I manipulate a field iteration variable independently? Here is sample tcl code for within an xlate:

set npi “NPI”

set providerID $xlateInVals

if {[lsearch -regexp $providerID $npi]} {

set xlateOutVals $providerID

}

What I would like to do is have some sort of counter within the if statement that would be incremented, and use that in the Destination, i.e. 0(0).PV1.#7([counter]). I want to have PV1.#7(0) be the first physician NPI, and PV1.#7(1) be the second. I do not know if I need to manually increment an iteration variable, or if I can just put a $physCnt in the destination; or if I’m making this unnecessarily complicated, overlooking a more simple solution.

As always, any insight is appreciated.