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National Library of Medicine Technical BulletinNational Library of Medicine Technical Bulletin

Table of Contents: 2017 NOVEMBER–DECEMBER No. 419

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RxNorm December 2017 Release

RxNorm December 2017 Release. NLM Tech Bull. 2017 Nov-Dec;(419):b8.

2017 December 04 [posted]

The RxNorm December 2017 full monthly release is available as of Monday, December 4, 2017. The United States Food and Drug Administration (FDA) started adding 4-letter suffixes to the nonproprietary ingredient name of new biological products. The FDA-designated distinguishing suffix is devoid of meaning and composed of four lowercase letters.

RxNorm is representing the nonproprietary ingredient name lacking the 4-letter suffix as an ingredient (TTY=IN). The more granular ingredient name with the 4-letter suffix is represented as a precise ingredient (TTY=PIN).

To illustrate, here are several RxNorm forms for the biological product Renflexis:

SBD 1927290 infliximab-abda 100 MG Injection [Renflexis]
SCD 1927285 infliximab-abda 100 MG Injection
PIN 1927283 infliximab-abda
IN 191831 infliximab

For more information, see Nonproprietary Naming of Biological Products: Guidance for Industry (PDF format) from the FDA.

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