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31 Stars 12 Forks Other 2.2K Commits 40 Opened issues


Scalable SNOMED CT Terminology Server using Elasticsearch

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Snowstorm Terminology Server

Build Status Language grade: Java codecov Docker

Snowstorm is a SNOMED CT terminology server built on top of Elasticsearch, with a focus on performance and enterprise scalability.

Project Status

Read-Only Use

Snowstorm provides the terminology server API for the SNOMED International Browser including the International Edition and around fourteen national Extensions.

Snowstorm can be used in local implementations to query SNOMED CT with the following features: - Hosting multiple extensions alongside the International Edition of SNOMED CT - Multi-lingual search and content retrieval - Fully ECL v1.3 compliant - Full history (depends on full RF2 import) - Read-only FHIR API :fire:

Authoring Use

Snowstorm also provides the terminology server API for the SNOMED International Authoring Platform.

The Authoring Platform is used for the maintenance of the International Edition of SNOMED CT as well as nine national Extensions and several community content Extensions.


Contributing :star:

We welcome questions, ideas, issues and code contributions to this project.

Use the issues page to get in touch with the community.

If you could like to make a code contribution please fork the repository and create a GitHub pull request to the



Apache 2.0

See the included LICENSE file for details.


For Java performance profiling we recommend the JProfiler Java profiler.

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