Automated mapping of pharmacy orders from two electronic health record systems to RxNorm within the STRIDE clinical data warehouse.
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.
Hernandez
Penni
P
Center for Clinical Informatics, Stanford University, Stanford, CA, USA.
Podchiyska
Tanya
T
Weber
Susan
S
Ferris
Todd
T
Lowe
Henry
H
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