RxNorm and DailyMed Stuart J. Nelson, MD, FACP, FACMI
What is RxNorm? Public Domain Vocabulary Standardized (NORMalized) names for Clinical Drugs Supports Interoperability Part of UMLS
The Clinical Drug Problem (1) Missed Synonymy in UMLS HL7 Discussions Clinical Drug Defined –Ingredient plus Strength or Form or Both
The Clinical Drug Problem (2) Ciprofloxacin 100mg/50mL IV Infusion Ciprofloxacin 400mg/200 ml IV Infusion Ciprofloxacin Lactate 0.2% in Saline (Base Equiv) Ciprofloxacin IV Soln 2 MG/ML The Same, or Different?
Why Clinical Drugs? NDC Codes –Too Granular –Incomplete Records –Meaningful Identifiers –Without Hyphens - Not Unique No Source Complete and Accurate
NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: Propranolol 10 Mg Oral Tablet NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC: NDC:
The RxNorm Model
Sources of Clinical Drug Vocabularies First Databank Multum Micromedex MediSpan Gold Standard SNOMED-CT VA NDF FDA - NDC Registry, DailyMed
Present Status Coverage –Prescription Drugs (US) –99% Complete Browser (RxNav)
Differences From UMLS Normalized Names Establish Synonymy Frequent Releases Limited Scope
DailyMed Basis Structured Product Labels FDA Approved Information
What is a Product Label? Content Approved by FDA Information for Prescribers/ Dispensers Rarely Information for Patients
Product Label Distribution Old Method Printed on Odd Shaped Paper Tiny Print Folded to Postage Stamp Size Stuck Inside Box Some Printed in PDR Updates Erratic
Product Label Distribution New Method Submitted and Processed Electronically Sent to NLM Available Online (Section 508 Compliant) Downloadable for Reuse First Label November 1, 2005 Easily Updated
Other Features of DailyMed Links –PubMed –MEDLINEplus –ClinicalTrials –Presence in Breast Milk –Reporting Adverse Events RxNorm Names and Codes
DailyMed Functions Download Product Labels Print Product Labels Forward Label Search Archive for Old Labels Notify of Changes (RSS)
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