The UMLS^® Reference Manual describes the Unified Medical Language System (UMLS) Knowledge Sources and related tools that are produced and distributed by the National Library of Medicine, a part of the National Institutes of Health in the U.S. Department of Health and Human Services.

Contents

• Preface
  Last Update: September 10, 2009.
• 1. Introduction to the UMLS
  Last Update: September 10, 2009.
  • 1.1. Purpose of the UMLS
  • 1.2. Conditions of Use of the UMLS
  • 1.3. The UMLS Knowledge Sources and Associated Tools
  • 1.4. Getting Started
  • 1.5. Sources of Additional Information about the UMLS
• 2. Metathesaurus
  Last Update: August 20, 2021.
  • 2.1. Overview
  • 2.2. Source Vocabularies
  • 2.3. Concepts, Concept Names, and Their Identifiers
  • 2.4. Relationships and Relationship Identifiers
  • 2.5. Attributes and Attribute Identifiers
  • 2.6. Data About the Metathesaurus
  • 2.7. Concept Name Indexes
  • 2.8. Character Sets
  • 2.9. Content Views
  • 2.10. Mappings
• 3. Metathesaurus - Rich Release Format (RRF)
  Last Update: August 20, 2021.
  • 3.1. Data Files
  • 3.2. Columns and Rows
  • 3.3. Descriptions of Each File
• 4. Metathesaurus - Original Release Format (ORF)
  Last Update: August 20, 2021.
  • 4.1. Data Files
  • 4.2. Columns and Rows
  • 4.3. Descriptions of Each File
• 5. Semantic Network
  Last Update: August 20, 2021.
  • 5.1. Overview
  • 5.2. Semantic Network ASCII Relational Format
  • 5.3. Semantic Network ASCII Unit Record Format
• 6. SPECIALIST Lexicon and Lexical Tools
  Last Update: August 20, 2021.
  • 6.1. General Description
  • 6.2. The Scope of the Lexicon
  • 6.3. Lexicon Data Elements
  • 6.4. Lexicon Relational Tables
  • 6.5. The SPECIALIST Lexicon Unit Record
  • 6.6. Lexical Databases Introduction
  • 6.7. Sample Records
  • 6.8. The SPECIALIST Lexical Tools
• 7. Using the UMLS Terminology Services (UTS)
  Last Update: August 20, 2021.
  • 7.1. Downloading the UMLS Knowledge Sources
  • 7.2. System Architecture
  • 7.3. Querying the UTS
  • 7.4. Gaining Access to the UTS
  • 7.5. UTS
• 8. MetamorphoSys - The UMLS Installation and Customization Program
  Last Update: August 20, 2021.
  • 8.1. MetamorphoSys Requirements
  • 8.2. Starting MetamorphoSys
  • 8.3. MetamorphoSys Help
• 9. UMLS DVD
  Last Update: September 10, 2009.
  • 9.1. Hardware and Software Requirements
  • 9.2. Installing from the DVD
• 10. Current UMLS Release Information
  Last Update: September 10, 2009.