Interestingly, I heard about that a couple of months ago going to a med conference and listening to Atul Butte. Here is the longer narrative of the taxonomic structure of death causes:

https://youtu.be/pY5_KSMlAUQ?t=105

(By the way, the rest of Atul's talk is also quite interesting, too, for people who are looking for building the next open-source bio/medical-informatics company in their garage.)