Introduction
Last updated
Last updated
Snow Owl® is a highly scalable terminology server with revision-control capabilities and collaborative authoring platform features. It allows you to store, search, and author high volumes of terminology artifacts quickly and efficiently.
You work in the healthcare industry and are interested in using a terminology server for browsing, accessing, and distributing components of various terminologies and classifications to third-party consumers. In this case, you can use Snow Owl to load the necessary terminologies and access them via FHIR and proprietary APIs.
You are responsible for maintaining and publishing new versions of a particular terminology. In this case, you can use Snow Owl to access collaboratively and author the terminology content and at the end of your release schedule publish it with confidence and zero errors.
You have an Electronic Health Record system and would like to capture, maintain, and query clinical information in a structured and standardized manner. Your Snow Owl terminology server can integrate with your EHR server via standard APIs to provide the necessary access for both terminology binding and data processing and analytics.
Maintains multiple versions (including unpublished and published) for each terminology artifact and provides APIs to access them all
Independent work branches offer work-in-progress isolation, external business workflow integration, and team collaboration
SNOMED CT terminology support
RF2 Release File Specification as of 2024-05-01
Support for Relationships with concrete values
Official and Custom Reference Sets
With its modular design, the server can maintain multiple terminologies (including local codes, mapping sets, and value sets)
Dedicated SNOMED CT, ATC, ICD-10, LOINC, Local Code System, Value Set, and Concept Map APIs
Simple to use plug-in system makes it easy to develop and add new terminology tooling/API or any other functionality
Connect to your existing cluster or use the embedded instance (supports up to Elasticsearch 8.x)
All the power of Elasticsearch is available (monitoring, analytics, and many more)
Numerous other organizations have directly or indirectly contributed to Snow Owl, including:
Singapore Ministry of Health
American Dental Association
University of Nebraska Medical Center (USA)
Federal Public Service of Public Health (Belgium)
Danish Health Data Authority
Health and Welfare Information Systems Centre (Estonia)
Department of Health (Ireland)
New Zealand Ministry of Health
Norwegian Directorate of eHealth
Integrated Health Information Systems (Singapore)
National Board of Health and Welfare (Sweden)
eHealth Suisse (Switzerland)
National Library of Medicine (USA)
If you’d like to see Snow Owl in action, the provides a managed terminology server and high-quality terminology content management from your web browser.
Expression Constraint Language v2.1.0 ,
Compositional Grammar 2.3.1 ,
Expression Template Language 1.0.0 ,
FHIR API R5 (R4B and R4 are also supported for certain resource types)
CIS API 1.0
Built on top of (highly scalable, distributed, open source search engine)
In March 2015, generously licensed the Snow Owl Terminology Server components supporting SNOMED CT. They subsequently made the licensed code available to their and the global community under an open-source license.
In March 2017, licensed the Snow Owl Terminology Server to support the mandatory adoption of SNOMED CT throughout all care settings in the United Kingdom by April 2020. In addition to driving the UK’s clinical terminology efforts by providing a platform to author national clinical codes, Snow Owl will support the maintenance and improvement of the dm+d drug extension which alone is used in over 156 million electronic prescriptions per month. Improvements to the terminology server under this agreement were made available to the global community.
