In United States law, depraved-heart murder, also known as depraved-indifference murder, is a type of murder where an individual acts with a "depraved indifference" to human life and where such acts result in a death, despite that individual not explicitly intending to kill. In a depraved-heart murder, defendants commit an act even though they know their act runs an unusually high risk of causing death or serious bodily harm to a person. If the risk of death or bodily harm is great enough, ignoring it demonstrates a "depraved indifference" to human life and the resulting death is considered to have been committed with malice aforethought.[1][2] In some states, depraved-heart killings constitute second-degree murder,[3] while in others, the act would be charged with "wanton murder",[4][5] varying degrees of manslaughter,[6] or third-degree murder.
If no death results, such an act would generally constitute reckless endangerment (sometimes known as "culpable negligence") and possibly other crimes, such as assault.