Medical informatics at Mayo Clinic
- Details the LexGrid project, for standardizing the storage and access of medical terminologies. Provides tools, standards and content details.
- http://informatics.mayo.edu

OpenGALEN
- An open source terminology with tools, expertise and experience in building and delivering a multiaxial medical concept model and terminology.
- http://www.opengalen.org/

Classifications and Terminologies Working Group (CTWG)
- Committee of the Australian National Health Information Group (NHIG) with responsibilities for endorsing and monitoring the stability and viability of health classifications and terminologies within Australia. Details of membership, informatics resources,
- http://www.aihw.gov.au/committees/ctwg/

National Centre for Classification in Health
- Australian centre of excellence in health classification theory and an expert centre in clinical coding systems. (Home of ICD10-AM).
- http://www2.fhs.usyd.edu.au/ncch/

Logical Observation Identifiers Names and Codes (LOINC)
- Dataset of universal identifiers for laboratory and other clinical observations to facilitate exchange and storage of clinical results or vital signs for patient care and research. Includes downloads, news, meetings, background, articles, e-mail list and
- http://www.loinc.org/

Unified Medical Language System (UMLS)
- Metathesaurus and semantic network with lexical applications that can be used to overcome problems caused by differences in terminology and scattering of related information across databases. Includes FAQs, documentation, papers, license agreements, knowl
- http://www.nlm.nih.gov/research/umls/

SNOMED International: The Systematized Nomenclature of Medicine
- A dynamic, sustainable, scientifically validated terminology developed by College of American Pathologists (CAP) to enable the sharing of health care knowledge across clinical specialties and sites of care. Includes news, events, services, programs, relat
- http://www.snomed.org/