Millionaire Hans Rausing appeared in court charged with preventing the lawful and decent burial of his wife Eva, whose body was found underneath several layers of clothing and bin bags at their luxury home.
Rausing, who looked frail in the dock at West London Magistrates' Court, was granted conditional bail to appear again at Isleworth Crown Court on July 26.
Police discovered the body of mother-of-four Mrs Rausing in an advanced state of decomposition after they arrested her husband - the heir to the Tetra Pak millions - on suspicion of driving under the influence of alcohol or drugs last Monday.
Mrs Rausing, one of Britain's richest women, was found beside a bed in an annexe on the second floor of the opulent house in Cadogan Place in London's Chelsea, which she shared with her 49-year-old husband.
Bearded and bespectacled, Rausing spoke only to confirm his name, age and address in court.
Rausing, whose family made a fortune when they sold the Tetra Pak drinks carton business in the 1990s, was wearing a dark suit and light blue shirt with no tie.
District Judge James Henderson told him: "I grant you bail on two conditions. The first is that you must reside at the Capio Nightingale Hospital and that you live there and sleep there overnight, and you do not leave that hospital unless you are accompanied by a member of hospital staff."
Rausing was represented in court by Alexander Cameron QC, the older brother of Prime Minister David Cameron.