Hi @Pulver, you’re right, except that a minor CVX-RxNorm deduplication job took place years ago. It’s described here in a proposal that was never fully implemented.
It must be true for all CVX concepts. If it doesn’t seem so, it’s either something that we missed, or other pneumococcal vaccines don’t have a good consolidated concept for mapping. I’m guessing now, but it might be a one-vs-many problem. If you happened to have more than one drug form, how would you choose one over the others?