Article continues below advertisementOzzy Osbourne's cause of death was revealed two weeks after the rocker's passing at 76. The late Black Sabbath rocker's official cause of death is listed as "out of hospital cardiac arrest" and "acute myocardial infarction," with coronary artery disease and Parkinson's disease with autonomic dysfunction listed as "joint causes," according to a death certificate obtained by a news outlet. Osbourne's eldest daughter, Aimee Osbourne, submitted the death certificate at a registry in London.