| DESCRIPTION |
RxNorm is a standardized nomenclature for clinical drugs. RxNorm is
Unified Medical Language System (UMLS). Some of the Metathesaurus fields
are not provided by RxNorm and are marked as "(no value provided)". There
is exactly one row in this table for each concept, atom, or relationship
attribute that does not have a sub-element structure. Not all RxNorm
concepts or RxNorm relationships have entries in this file. This file
includes all source vocabulary attributes that do not fit into other
categories.
produced by the National Library of Medicine (NLM). In this context, a
clinical drug is a pharmaceutical product given to (or taken by) a patient
with a therapeutic or diagnostic intend. The name of the drug in RxNorm
combines its ingredients, dosage strength, and form.
The RxNorm Simple Concept and Atom Attributes file contains a subset
of the data distributed by NLM in the RXNSAT.RRF file. This file follows
the general format of the MRSAT.RRF file of the Metathesaurus in NLM's
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