I'm sorry, I don't know the name. There's an anime featuring doctors which has at least one scene that ends in death, and shows necrophilia the male isn't aware of.

If you went on Sankaku Complex and searched for "Animation" and "Nurse" you'd end up finding it. But I don't think it's tagged with snuff or guro since... Well since no one wants to admit they're watching snuff.

(Sigh I should've tagged it when I saw it, I just thought of that.)