Format

Send to

Choose Destination
See comment in PubMed Commons below
AMIA Annu Symp Proc. 2010 Nov 13;2010:562-6.

Evaluation of RxNorm for Representing Ambulatory Prescriptions.

Author information

1
RAND Corporation, Santa Monica, CA;

Abstract

OBJECTIVE:

We evaluated the RxNorm standardized drug nomenclature for representing ambulatory e-prescriptions.

METHODS:

Using a sample of 19743 primary care e-prescriptions, we estimated the coverage rate of RxNorm for representing clinical drugs, measured the 6-month replacement rate for RxNorm concepts, assessed the consistency of two independent concept mappings, and investigated inconsistent mappings.

RESULTS:

RxNorm contained concepts for nearly all prescriptions in the sample (99.995%). Of 1419 concepts used, 8.1% were replaced between April and October 2009. Independent mappings produced different concepts for 676 e-prescriptions (3.4%), but most differences would have low clinical significance. Most mismatches were related to the use of extended-release form concepts with no duration specified, inhalers vs. their contents, and clinically inert salts.

CONCLUSIONS:

RxNorm provides concepts covering nearly all ambulatory e-prescriptions in this setting. Independent mappings were relatively consistent. Improvements could be made by enabling selection of the most-specific concepts when broader prescribable concepts exist.

PMID:
21347041
PMCID:
PMC3041423
[Indexed for MEDLINE]
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for PubMed Central
    Loading ...
    Support Center