> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.emtelligent.com/nlp/database/schema/extensions/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.emtelligent.com/_mcp/server.

# Extensions

## Docs

- [Extensions](https://docs.emtelligent.com/nlp/database/schema/extensions/overview.md)
- [Using SNOMED CT Concept Hierarchies](https://docs.emtelligent.com/nlp/database/schema/extensions/snomed-hierarchies.md)
- [Using SNOMED CT Concept Descriptions](https://docs.emtelligent.com/nlp/database/schema/extensions/snomed-descriptions.md)