The incident took place when Hughes was playing in a Sheffield Shield match at the Sydney Cricket Ground.
Hughes has died, said Cricket Australia in a statement.
“He never regained consciousness following his injury on Nov 25, 2014,” Sydney Morning Herald cited the statement as saying.
“He was not in pain before he passed and was surrounded by his family and close friends. As a cricket community we mourn his loss and extend our deepest sympathies to Phillip’s family and friends at this incredibly sad time.”
Hughes, 25, has been in an induced coma since the accident Tuesday afternoon.