# Representing Concepts in FHIR

**URL:** <https://talk.openmrs.org/t/representing-concepts-in-fhir/26037>\
**Category:** FHIR\
**Tags:** terminology\
**Created:** [December 19, 2019, 9:35pm UTC](https://talk.openmrs.org/t/representing-concepts-in-fhir/26037 "2019-12-19T21:35:22Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![ibacher](https://talk.openmrs.org/user_avatar/talk.openmrs.org/ibacher/32/19751_2.png) [@ibacher](https://talk.openmrs.org/u/ibacher)\
**Post date:** [December 20, 2019, 2:16pm UTC](https://talk.openmrs.org/t/representing-concepts-in-fhir/26037/4 "2019-12-20T14:16:01Z")

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> [@dkayiwa](#):
>
> I understood this as option 3

So this is actually what I was talking about as “dummy URLs”. All of those are URLs for code systems that are part of the core data set. My question is what we do for the codes that the old version coded as “[http://openmrs.org](http://openmrs.org)”, i.e., if you look at the last coded entry for the [observation here](https://talk.openmrs.org/t/fhir-encounter-visit-observation-resources/1781).

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