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Unified Medical Language System® (UMLS®)

RxNorm Source Inclusion Evaluation Criteria and Background Questions

Version 1.1 - September 21, 2018

To consider a new source vocabulary for inclusion in RxNorm, the National Library of Medicine (NLM) needs to understand details about your vocabulary and why you would like NLM to add your vocabulary to RxNorm. Answering the questions below will provide NLM with a better understanding of your vocabulary and if it meets the criteria for inclusion. Please provide as much information as possible to assist NLM in making an informed decision regarding the inclusion of your vocabulary in RxNorm. NLM reserves the right to change these questions and criteria at any time.

You can download an editable version of the questions below and then submit the completed document to

Inclusion Evaluation Criteria

Value to RxNorm

NLM wants to understand the use cases for your vocabulary and its user communities.

Source Vocabulary Content

NLM wants to understand your vocabulary content, including the organizational principles and editorial guidelines used to create your vocabulary.

Technical Process and Development

NLM wants to understand the technical aspects of your vocabulary.

Background Questions

NLM wants to understand additional details about your vocabulary.

Terms of Agreement

Source vocabularies included in RxNorm follow the terms of the UMLS Metathesaurus License Agreement. Please examine the UMLS Metathesaurus License Agreement and resolve any questions about copyright ownership.

Last Reviewed: September 21, 2018