# Death

<mark style="color:$danger;">**This Editorial Guide is used for Education Purposes Only. It is used in the Authoring Courses and Certifications. It is based on the January 2026 Editorial Guide.**</mark>

*Death* is an event, not a disorder.

### Sudden cardiac death

*Sudden cardiac death* is a term used in clinical practice. It refers to an arrhythmia that results in sudden loss of cardiac function which, if not quickly reversed, will lead to *actual* death. The FSN Sudden cardiac death (disorder) is modeled as a subtype of 127337006 |Acute heart disease (disorder)|. It should not be classified as *death.* Individuals with sudden cardiac death have not necessarily been declared *dead* and are frequently revived. It is regarded as a *subtype* of *cardiac dysrhythmia*.

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