Hertfordshire Police have said Sean Hoare's death is being treated as "unexplained, but not thought to be suspicious".
His body was discovered at his home in Watford after there was concern about his whereabouts.
Mr Hoare claimed Andy Coulson had "encouraged" him to hack phones in an article for the New York Times.
He accused Mr Coulson of being aware of the practice, an allegation the former NOTW editor denied.
He was interviewed by police in September about the allegations but made no comment.
Mr Hoare - who worked as a showbiz journalist - was sacked by the News Of The World over problems he had with drink and drugs. Source