Comparison and Analysis of the National Drug Code Systems Among Drug Information Databases
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Copyright 0 1998 Drug Information Association Inc.
COMPARISON AND ANALYSIS OF THE NATIONAL DRUG CODE SYSTEMS AMONG DRUG INFORMATION DATABASES* JEFF JIANFEIGuo, BPHARM,PHD Clinical Informatics Specialist, U. S. Phannacopeia, Rockville, Maryland
MARKC. DIEHL,DDS, MPH Director, Clinical Informatics, U. S. Pharmacopeia, Rockville, Maryland
BILL G. FELKEY,MS Associate Professor, Auburn University, Auburn. Alabama
J. TYRONE GIBSON,PHD CEO, Health Data Inc., Auburn, Alabama
KENNETHN. BARKER,PHD Professor, Head of Pharmacy Care Systems, Auburn University, Auburn, Alabama
National Drug Codes (NDC) is a drug identification code that is widely used to identify each unique commercially available drug product in the computerized health care industry. Various NDC database systems are currently used for the drug claims process, inventory control, and drug utilization review in the industry. Using a relational database, comparison and analysis were performed among eight major NDC database sources from the Food and Drug Administration, the Health Care Financing Administration, Medicaid, Redbook", Medi-Span", First DataBank", Bergen Brunswig-Durr Fillauer", and the Department of Veteran Affairs pharmaceutical information systems. A large discrepancy of comparability among those major NDC database sources was found with the percentage of matched rates ranging from 29.8-99.3%. The study suggests that a public central repository of a completed NDC database system is needed as a standard NDC reference for the health care industry in order to improve the comparability, accessibility, and quality of drug information. Key Words: National Drug Codes; Database; Drug information
*Originally presented at the Southern Pharmacy Administration Conference, May 30-31, 1996. in Oxford, Mississippi. The opinions expressed in this article are the opinions of the authors and do not necessarily constitute the opinions of the institutions that the authors represent. Databases involved in this study were only for this research; no commercial activities were conducted. Questions regarding specific database design and programs should be referred to the first author. Reprint address: Jeff J. Guo, PhD, U. S. Phannacopeia, 12601 N n b r o o k Parkway, Rockville, MD 20852.
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J. J. Guo, M. C. Diehl, B. G. Felkey, J. T. Gibson,and K. N. Barker
National Drug Code Directory (NDCD) in magnetic tape form and more than 300 disA NATIONAL DRUG CODE system was cre- crepancies between NDCD and shelf stock ated by the Food and Drug Administration samples of hospital and community pharma(FDA) in 1969 (1). It is a universal product cies (1). They explored and explained the code used to identify each unique commer- importance of the quality issue for NDC data cially available drug product for the computer sources. Very limited research on the subject processing of drug information systems. Cur- of the NDC coding system was found. With the development of computerized inren
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