# Concept Inactivation

You can inactivate a concept from the SNOMED CT View, right-click the concept and select ![](https://snowowl.atlassian.net/wiki/download/attachments/611026488/inactive-icon.png?version=1\&modificationDate=1578404656681\&cacheVersion=1\&api=v2) *Inactivate concept* from the context menu.

In case the concept has child concepts, a warning dialog asks you to confirm the action before displaying the inactivation plan.

<figure><img src="https://content.gitbook.com/content/N7ynFOLTw3W9Zow9AaAJ/blobs/1EhxheSZHxYlfJROKJfN/image.png" alt=""><figcaption><p>Inactivation warning for concepts with children</p></figcaption></figure>

The inactivation plan shows which components will be affected by the inactivation.

![Concept Inactivation Plan](https://content.gitbook.com/content/N7ynFOLTw3W9Zow9AaAJ/blobs/fx52qjCXuV5Pgt1CJicl/sct_inactivation_plan.png)

You can also specify the reason for inactivation (e.g., erroneous) and a target component (e.g., the concept that the inactivated concept was replaced by).

![Concept Inactivation Reason](https://content.gitbook.com/content/N7ynFOLTw3W9Zow9AaAJ/blobs/7ioFWGeahHNT3hJf10JV/sct_inactivation_reason.png)

If there is no inactivation reason selected and the user proceeds to **`Finish`**, a dialog will warn the user about the fact.

![Inactivation Warning for No Inactivation Reason](https://content.gitbook.com/content/N7ynFOLTw3W9Zow9AaAJ/blobs/u0JggEtwWGaZ0BosJS2z/sct_inactivation_warning_no_reason.png)

If you return to the concept in the concept editor, you will see that the *Status* has been changed to `Inactive`, the *Definition status* set to `Primitive` and the *Effective time* set to `Unpublished`. The *Inactivation Indicator* and *Replaced by* values are also displayed.

![Inactive SNOMED CT Concept](https://content.gitbook.com/content/N7ynFOLTw3W9Zow9AaAJ/blobs/hLwb9mUKIOPnru7XAM9f/sct_inactivated_concept.png)

{% hint style="info" %}
Inactive concepts are not present in the SNOMED CT View or in the Quick Search. To find an inactive concept you need to use the Advanced Search Dialog and open the Concept Editor from the search results.
{% endhint %}