The SNOMED CT Expression Constraint Language is a formal language for defining bounded sets of clinical meanings represented by either precoordinated or postcoordinated expressions.
Status
SNOMED CT expression constraint language version 2.1 has been published at http://snomed.org/ecl.
Implementations
SNOMED International is aware of the following implementations of the SNOMED CT Expression Constraint Language:
- Snowstorm - SNOMED International Terminology Server (via REST API) - https://github.com/IHTSDO/snowstorm
- Provides API for the SNOMED International public browser (See "Expression Constraint Queries" tab) - https://browser.ihtsdotools.org/
- SNOMED International SNOMED CT Query Service - https://github.com/IHTSDO/snomed-query-service
- CSIRO Ontoserver Expression Constraints - https://ontoserver.csiro.au/shrimp/ecl.html (help)
- ECL Syntax Parser - https://github.com/hsolbrig/SNOMEDCTParser
- Hermes: https://GitHub.com/wardle/hermes
PHAST's FHIR Terminology server STS - https://topaze.phast.fr/resources-server/api/fhir
Available 24x7 for testing, through CSIRO's VS tool - https://ontoserver.csiro.au/vstool/
- Slang - http://slang.snomedic.com:8080/yats/
- SnoLyze - https://github.com/slaverman/SnoLyze (ECL v1.2)
- Snomedizer: https://github.com/ramses-antibiotics/snomedizer
- Snow Owl
- Terminology Server (via REST API) - https://github.com/IHTSDO/snow-owl
- ECL 1.4 - https://github.com/b2ihealthcare/snomed-ecl
- ECL 1.5 - https://github.com/b2ihealthcare/snomed-ecl/tree/upgrade/ecl-1.5
- QL 0.1 - https://github.com/b2ihealthcare/snomed-ql
- SNQuery - http://snquery.veratech.es/
- Terminz - https://terminz.azurewebsites.net/fhir
- termMed’s termSpace - http://demo.termspace.com/ and https://termmed.atlassian.net/wiki/display/TSD/Creating+queries
- West Coast Informatics (WCI) SNOMED Terminology Server - https://snomed.terminology.tools/terminology-ui/index.html
If you know of additional ECL implementations, please contact info@snomed.org with details.