To put it in context, we have found another AMT to ATC mapping done by PBS in Australia. However, these we don't exactly know how they mapped it and we would assume that being a medication reimbursement scheme, the mappings are done for their purpose, we are interested in how accurate and reliable these mappings are in comparison to whats done in OMOP for our purpose (drug utilisation/cohort identification).
I have a few questions and follow ups from previous comments
some SNOMED substances have existing mappings to RxNorm ingredients.
From where? UMLS?
So mappings only exsist at the substance level.
What about other levels? trade product, trade product unit etc. Were these all matched one by one by the volcabulary mapping team manually?
RxNorm is partially sourced from ATC, so the mapping is already existing between RxNorm and ATC. and this is only at the ingredients level I'm guessing? And and ATC classification is linked to individual drugs based on RxNorm internal links between ingredients and drugs. is this correct?
And does anyone have the numbers of how many RxNorm were mapped to ATC and how many of AMT was mapped to ATC through RxNorm in OMOP.