> 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/editing-and-authoring/snomed-ct-editing/removing-components/concept-inactivation.md).
# Concept Inactivation
You can inactivate a concept from the SNOMED CT View, right-click the concept and select  *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.
Inactivation warning for concepts with children
The inactivation plan shows which components will be affected by the inactivation.
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).
If there is no inactivation reason selected and the user proceeds to **`Finish`**, a dialog will warn the user about the fact.
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*Status* has been changed to `Inactive`, the *Definition status* set to `Primitive` and the *Effective time* set to `Unpublished`.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.
{% 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 %}
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