> For the complete documentation index, see [llms.txt](https://docs.b2ihealthcare.com/snow-owl-authoring-platform/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.b2ihealthcare.com/snow-owl-authoring-platform/umls-code-systems/manage-code-systems.md).

# Manage Code Systems

To manage the UMLS code systems, there are a few utility commands that can be invoked from the console:

```
osgi> snowowl umls
Usage:

Provides commands to manage UMLS content

umls [COMMAND]

Description:

Provides commands to manage UMLS content.
Commands:
  help     Displays help information about the specified command
  import   Imports UMLS content
  catalog  Lists UMLS code systems
  list     Lists UMLS imported code systems
  delete   Deletes a UMLS code system
```

The archive prepared by the *`NLM MetamorphoSys`* tooling can be imported both from the client user interface as well as from the Snow Owl server console. To import from the server console, use the import command as the following example:

```
osgi>snowowl umls import "F:/Development/terminology_sources/umls/umls-2020AA-metathesaurus.zip" ICD9CM AOT
```

To import from the Snow Owl thick client select the `File > Import > UMLS from archive` menu.


---

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