Entertainment NewsPenny Marshall’s Official Cause of Death Revealed as Heart FailureSaveMark Us Preferred on GooglePrintActress/filmmaker Penny Marshall (L), Henry Winkler, and guest attend the 2014 Writers Guild Awards L.A. Ceremony at J.W. Marriott at L.A. Live on Feb. 1, 2014, in Los Angeles. Alberto E. Rodriguez/Getty Images for WGAwZachary StieberSenior Reporter12/31/2018|Updated: 12/31/2018Penny Marshall’s official cause of death was listed as heart failure by the Los Angeles County Coroner’s Office.The death certificate also lists cardiovascular disease and diabetes as contributing factors to the death of Marshall, a famed actress, reported TMZ.We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.