> For the complete documentation index, see [llms.txt](https://docs.b2ihealthcare.com/snowray/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/snowray/snowray-v1.1.1/reference/resources/codesystems/import.md).

# Import

Imports can be performed on existing code systems by importing a Delta release.

{% hint style="info" %}
Snowray supports the [SNOMED CT Release Format 2](https://confluence.ihtsdotools.org/display/DOCGLOSS/SNOMED+CT+Release+Format+2).
{% endhint %}

The import functionality can be accessed from the selected resource's overview page by pressing the![](https://1046423764-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MfXbzY7oaJUjXyvlBQk%2Fuploads%2Fgit-blob-716803c08b91efd034fc1e95dc5e727fe6252f5d%2Fimport_rf2_button.png?alt=media)button located in the upper right corner.

Users have two options to specify the import file in the import wizard: either by clicking in the import area and using the selector, or by drag and dropping it to the designated area.

![RF2 Import Wizard](https://1046423764-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MfXbzY7oaJUjXyvlBQk%2Fuploads%2Fgit-blob-6258ee25b3efaef8f42faac9ad2366a565d1c9f7%2Fsnomed_rf2_import_wizard.png?alt=media)

{% hint style="success" %}
After clicking the Next button, the import will be performed to the selected code system.
{% endhint %}