RM needs an independent Cause of Death fact. CAUS has been a standard GEDCOM tag for decades.
It seems RM relegates cause of death to the description field of death which doesn't really work. For starters, I note other information there. More importantly, cause of death needs to be its own fact for its own reasons. If one is doing genetic genealogy or medical family profiles, then cause of death needs to be easily identified and simply noted, not parsed out of another fact's description field and distilled from other information there.