The source of drug-drug contraindication information in a computerized provider order entry system…

➤ Is RxNorm sufficient to detect contraindications, or are additional resources required?
RxNorm standardizes drug names and codes but does not contain interaction logic or contraindication rules. You need an interaction engine or drug knowledge database that links RxNorm identifiers to clinical rules, severity scoring, and evidence summaries. Combining RxNorm with a curated knowledge base enables accurate, context-aware contraindication detection in CPOE systems.