is an Aggregator.
The Unified Medical Language System (UMLS) integrates and distributes over 200 biomedical vocabularies, terminologies, and classification standards to enable interoperability between information systems. It includes the Metathesaurus (terms and codes from vocabularies like CPT, ICD-10-CM, LOINC, MeSH, RxNorm, SNOMED CT), Semantic Network (broad categories and relationships), and SPECIALIST Lexicon (biomedical and general English lexicon with normalization tools).
Unknown
infores:umls
Unknown
| ID | Name | URL | Category | Format | Description |
|---|---|---|---|---|---|
| umls.browser | UMLS Metathesaurus Browser | home | GraphicalInterface | http | Web interface for browsing UMLS Metat... |
| umls.semantic_network_browser | UMLS Semantic Network Browser | root | GraphicalInterface | http | Web interface for viewing semantic ty... |
| umls.api | UMLS Terminology Services API | home.html | ProgrammingInterface | ❔ | REST API providing programmatic acces... |
| umls.release | UMLS Knowledge Sources Release Files | umlsknowledgesources.html | Product | ❔ | Full UMLS Knowledge Sources release i... |
| umls.metamorphosys | MetamorphoSys Customization Tool | help.html | ProcessProduct | ❔ | MetamorphoSys tool for customizing UM... |
| umls.specialist_lexicon | SPECIALIST Lexicon and Lexical Tools | index.html | ProcessProduct | ❔ | SPECIALIST Lexicon and Lexical Tools ... |
| ID | Name | URL | Category | Format | Relation | Description |
|---|---|---|---|---|---|---|
| icees-kg.graph | KGX distribution of the ICEES Exposures KP | 1.5.0 | GraphProduct | kgx-jsonl | had primary source | KGX distribution of the ICEES Exposur... |
| icees-kg.trapi | ICEES KG TRAPI API | icees-kg-trapi | ProgrammingInterface | http | had primary source | Translator Reasoner API (TRAPI) endpo... |
| icees-kg.metadata | ICEES KG Metadata | metadata-metadata-get-icees-kg | Product | json | had primary source | Meta knowledge graph and metadata des... |
| ndfrt.umls | VANDF in UMLS | umls | Product | ❔ | was influenced by | VANDF drug terminology data distribut... |
| unibiomap.links | UniBioMap Graph Links | unibiomap.links.csv (1.3 GB) | GraphProduct | csv | had primary source | Core UniBioMap graph edges file. |
| unibiomap.auxs | UniBioMap Graph Auxiliaries | unibiomap.auxs.tsv (563.9 MB) | GraphProduct | tsv | had primary source | Auxiliary UniBioMap graph annotations... |
| unibiomap.pred | UniBioMap Predicted Graph | unibiomap.pred.csv (2.3 GB) | GraphProduct | csv | had primary source | Predicted UniBioMap graph edges with ... |
| unibiomap.pred.full | UniBioMap Predicted Graph (Full) | unibiomap.pred.full.csv (5.9 GB) | GraphProduct | csv | had primary source | Full unfiltered UniBioMap predicted g... |
| medgen.mgconso | MGCONSO (Concept Names) | MGCONSO.RRF.gz (15.1 MB) | Product | txt | had primary source | Rich Release Format (RRF) file contai... |
| medgen.mgdef | MGDEF (Definitions) | MGDEF.RRF.gz (4.8 MB) | Product | txt | had primary source | Rich Release Format (RRF) file contai... |
| medgen.mgrel | MGREL (Relationships) | MGREL.RRF.gz (14.9 MB) | MappingProduct | txt | had primary source | Rich Release Format (RRF) file contai... |
| medgen.mgsat | MGSAT (Attributes) | MGSAT.RRF.gz (11.2 MB) | Product | txt | had primary source | Rich Release Format (RRF) file contai... |
| medgen.mgsty | MGSTY (Semantic Types) | MGSTY.RRF.gz (1.6 MB) | Product | txt | had primary source | Rich Release Format (RRF) file contai... |
| medgen.names | NAMES | NAMES.RRF.gz (3.0 MB) | Product | txt | had primary source | Rich Release Format (RRF) file contai... |
| medgen.merged | MERGED (Merged CUIs) | MERGED.RRF.gz (46.5 KB) | Product | txt | had primary source | Merged CUI mappings showing concept c... |
| cfde-ddkg.portal | DDKG Web Interface | dd-kg-ui.cfde.cloud | GraphicalInterface | http | had primary source | Interactive web interface for browsin... |
| cfde-ddkg.downloads | DDKG Downloads Manifest | downloads.json (5.1 KB) | Product | json | had primary source | JSON manifest listing downloadable DD... |
| hetionet.neo4j | Hetionet v1.0 Neo4j Database | browser | GraphicalInterface | http | had primary source | Browser for complete Hetionet v1.0 gr... |
| hetionet.data.json | Hetionet v1.0 JSON | hetionet-v1.0.json.bz2 (131 B) | GraphProduct | json | had primary source | Hetionet v1.0 in JSON format |
| hetionet.data.neo4j | Hetionet v1.0 Neo4j | hetionet-v1.0.db.tar.bz2 (132 B) | GraphProduct | ❔ | had primary source | Hetionet v1.0 as a Neo4j database |
| hetionet.data.edges | Hetionet v1.0 edges (SIF) | hetionet-v1.0-edges.sif.gz (131 B) | GraphProduct | sif | had primary source | Hetionet v1.0 as SIF edges |
| hetionet.data.nodes | Hetionet v1.0 nodes (TSV) | hetionet-v1.0-nodes.tsv (417.1 KB) | GraphProduct | tsv | had primary source | Hetionet v1.0 as TSV nodes |
| hetnetpy | hetnetpy | hetnetpy | ProcessProduct | ❔ | had primary source | Python package for creating, querying... |
| hetionet.search | Hetnet Connectivity Search | search | GraphicalInterface | http | had primary source | Web application to search and explore... |
| mind.train ⚠ | MIND Training Data | train.txt | GraphProduct | tsv | had primary source | Training data for the MIND knowledge ... |
| mind.test ⚠ | MIND Test Data | test.txt | GraphProduct | tsv | had primary source | Test data for the MIND knowledge grap... |
| mind.valid ⚠ | MIND Validation Data | valid.txt | GraphProduct | tsv | had primary source | Validation data for the MIND knowledg... |
| mind.entities | MIND Entities Dictionary | entities.dict (5.4 MB) | Product | tsv | had primary source | Dictionary of entities in the MIND kn... |
| mind.relations | MIND Relations Dictionary | relations.dict (1.6 KB) | Product | tsv | had primary source | Dictionary of relations in the MIND k... |
| petagraph.graph | Petagraph Knowledge Graph (Neo4J) | ubkg-downloads.xconsortia.org | GraphProduct | ❔ | had primary source | A comprehensive multi-omics biomedica... |
| rdkg.tpf | RDKG TPF | rdkg | ProgrammingInterface | http | had primary source | Triple Pattern Fragments endpoint for... |
| rtx-kg2.graph.nodes | RTX-KG2.10.1c KGX JSONL Nodes | kg2c-2.10.1-v1.0-nodes.jsonl.gz (359.1 MB) | GraphProduct | kgx-jsonl | had primary source | Nodes for KGX distribution of the RTX... |
| rtx-kg2.graph.edges | RTX-KG2.10.1c KGX JSONL Edges | kg2c-2.10.1-v1.0-edges.jsonl.gz (1.7 GB) | GraphProduct | kgx-jsonl | had primary source | Edges for KGX distribution of the RTX... |
| rtx-kg2.neo4j | RTX-KG2 Neo4j | arax.ncats.io | ProgrammingInterface | ❔ | had primary source | Neo4j distribution of the RTX-KG2 as ... |
| tbkg.data | TBKG Knowledge Graph Data | full#supplementary-material | GraphProduct | mixed | had primary source | Weighted heterogeneous knowledge grap... |
| tbkg.osimertinib_case_study | TBKG Osimertinib ADR Case Study Data | full#supplementary-material | Product | mixed | had primary source | Clinical validation dataset with calc... |
| ubkg.api | UBKG API | 96e5b5c0b0efeef5b93ea98ac2794837 | ProgrammingInterface | ❔ | had primary source | REST API with endpoints that abstract... |
| ubkg.guesdt | UBKG Guesdt Interface | Guesdt | GraphicalInterface | ❔ | had primary source | Guesdt (Graphing UMLS Enables Search ... |
| oregano.graph | OREGANO Knowledge Graph | Graphs | GraphProduct | http | was derived from | The OREGANO knowledge graph dataset i... |
| eram.web | eRAM Web Interface | eram | GraphicalInterface | http | was informed by | Web-based interface for browsing and ... |
| eram.downloads | eRAM Data Downloads | download.php | Product | mixed | was derived from | Downloadable data files containing ra... |
| kg-predict.gpkg | GP-KG Knowledge Graph Data | GP_KG.txt (46.2 MB) | GraphProduct | tsv | was derived from | GP-KG tab-delimited knowledge graph c... |
| med-rt.core_dts | Core MED-RT DTS Archive | Core_MEDRT_DTS.zip (2.4 MB) | Product | ❔ | was informed by | Current MED-RT DTS release archive fr... |
| med-rt.core_xml | Core MED-RT XML Archive | Core_MEDRT_XML.zip (2.4 MB) | Product | xml | was informed by | Current MED-RT XML release archive fr... |
| med-rt.core_spl | Core MED-RT SPL Archive | Core_MEDRT_SPL.zip (39.7 KB) | Product | ❔ | was informed by | Structured Product Labeling subset ar... |
The Unified Medical Language System (UMLS) is a comprehensive set of files and software developed by the U.S. National Library of Medicine (NLM) that brings together over 200 health and biomedical vocabularies and standards to facilitate interoperability between computer systems. The UMLS enables linking of different medical terminologies and codes used by physicians, pharmacies, insurance companies, hospitals, and research institutions.
The Metathesaurus is the largest component, containing:
Provides a consistent categorization of all concepts represented in the Metathesaurus through:
The UMLS can be used to:
National Library of Medicine, National Institutes of Health, U.S. Department of Health and Human Services
Created: October 30, 2025 | Last modified: October 30, 2025