---

Branch programs, products, and services include:

Controlled Vocabulary Services Program

Our mission: Develop and apply controlled vocabulary for improved access to biomedical information resources

• MEDLINE Curation
  • Curation of machine-indexed MEDLINE citations
  • Manual indexing of MEDLINE citations
  • Gene curation
  • Chemical curation
  • Curation and indexing workflow analysis


• Machine indexing algorithm (MTIX) development


• Medical Subject Headings (MeSH)
  MeSH terms, part of a controlled and hierarchically organized vocabulary produced by NLM, are used to index, catalog, and search biomedical and health-related information
  • MeSH content development
  • MeSH systems maintenance and development


• MeSH Browser
  An interactive Web application for searching and browsing MeSH data


• MeSH on Demand
  Identifies MeSH terms in user-submitted text (abstract or manuscript) and lists PubMed articles relevant to user-submitted text


• MeSH/UMLS Mapping File
  Providing searched term mapped with MeSH to match the term entered with the vocabulary that an indexer used to describe articles in PubMed

---

Terminology Services Program

Our mission: Curate, promote, and distribute health data standards and terminology resources

Curation of terminology products:

• RxNorm
  Provides normalized names for clinical drugs and links those names to many of the drug vocabularies commonly used in pharmacy management and drug interaction software


• SNOMED CT
  A comprehensive clinical terminology and a designated standard for use in U.S. Federal Government systems for the electronic exchange of clinical health information.


• Unified Medical Language System (UMLS)
  Set of files and software that brings together many health and biomedical vocabularies and standards to enable interoperability between computer systems.


• DailyMed
  Searchable database providing trustworthy information about marketed drugs in the United States and the most recent labeling submitted to the Food and Drug Administration (FDA) by companies.


• AccessGUDID
  (Global Unique Device Identification Database) Contains key device identification information submitted to the FDA about medical devices that have Unique Device Identifiers (UDI).

User systems for terminology products:

• UMLS Terminology Services (UTS)
  A UTS account provides access to the UMLS, the Value Set Authority Center (VSAC), RxNorm downloads, SNOMED CT downloads and more


• Value Set Authority Center (VSAC)
  A repository and authoring tool for standard lists of codes and terms from biomedical vocabularies, which are typically used in health care quality measures.


• NIH Common Data Elements (CDE) Repository
  Data elements (or variables) that are defined and used the same way across multiple studies, to standardize the way data is collected

back to top | back to programs

---