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Unified Medical Language System | |
Web site:
http://www.pbm.va.gov/NationalFormulary.aspx
Authority
The National Drug File (NDF) is produced by the U.S. Department of Veterans Affairs, Veterans Health Administration (VHA).
Purpose
NDF is a centrally maintained electronic drug list used by the VHA hospitals and clinics. Facilities use the NDF to check drug interactions, to manage orders, and to send outpatient prescriptions to regional automated mail-out pharmacies.
Description
NDF includes information on clinical drugs, drug classes, ingredients and National Drug Code (NDC) Directory codes.
Metathesaurus Scope
The Metathesaurus representation of NDF includes only clinical drugs, ingredients, drug classes, and NDC Codes for clinical drugs.
The Metathesaurus representation of NDF has approximately 19,883 clinical drugs; 7,023 ingredients; and 578 drug classes.
Update Frequency
NDF is updated every six weeks.
Metathesaurus Update Frequency
NDF is updated in each Metathesaurus release as part of RxNorm.
Sites Consulted
Last reviewed: 23 April 2009
Last updated: 23 April 2009
First published: 23 April 2009
Metadata| Permanence level: Permanence Not Guaranteed