title: Automated mapping of pharmacy orders from two electronic health record systems to RxNorm within the STRIDE clinical data warehouse.
abstract: The Stanford Translational Research Integrated Database Environment (STRIDE) clinical data warehouse integrates medication information from two Stanford hospitals that use different drug representation systems. To merge this pharmacy data into a single, standards-based model supporting research we developed an algorithm to map HL7 pharmacy orders to RxNorm concepts. A formal evaluation of this algorithm on 1.5 million pharmacy orders showed that the system could accurately assign pharmacy orders in over 96% of cases. This paper describes the algorithm and discusses some of the causes of failures in mapping to RxNorm.
authors.affiliation: Center for Clinical Informatics, Stanford University, Stanford, CA, USA.
authors.forename: Penni
authors.initials: P
authors.lastname: Hernandez
authors.forename: Tanya
authors.initials: T
authors.lastname: Podchiyska
authors.forename: Susan
authors.initials: S
authors.lastname: Weber
authors.forename: Todd
authors.initials: T
authors.lastname: Ferris
authors.forename: Henry
authors.initials: H
authors.lastname: Lowe
mesh_terms: D000465:Algorithms; D002140:California; D016303:Clinical Pharmacy Information Systems; D001330:Electronic Data Processing; D055695:Electronic Prescribing; D050316:Medical Order Entry Systems; D016347:Medical Records Systems, Computerized; D009323:Natural Language Processing; D010607:Pharmacy Service, Hospital; D018511:Systems Integration; D018875:Vocabulary, Controlled