Unified Medical Language System® (UMLS®)
Columbia Presbyterian Medical Center Medical Entities Dictionary Source Information
Medical Entities Dictionary (MED) was developed and is maintained by the Columbia Presbyterian Medical Center and Columbia University.
MED serves as a set of standard terms to represent and capture clinical data in electronic health records (EHR) systems.
MED is organized as a polyhierarchical semantic network of medical entities. It contains over 100,000 terms from a variety of sources, including the UMLS Metathesaurus, ICD-9-CM, and LOINC.
The Metathesaurus representation of MED includes only 3,000 MED terms. These terms are arranged polyhierarchically into seven groupings. The seven entity groupings are
- Anatomic Structure
- Conceptual Entity
- Etiologic Agent
- Measureable Entity
- Physical Object
- Sampleable Entity
MED is used by clinicians, nurses, and other health professionals.
Metathesaurus Update Frequency
MED was last updated in the Metathesaurus in 2003.
- Medical Entities Dictionary [Internet]. New York: Columbia University; [cited 2010 Feb 25]. Available from: http://med.dmi.columbia.edu/.