He was ailing for sometime and admitted to a hospital recently for treatment.
Mishra was MP from 1998 to 2004. He started his career as a journalist and served as editor of RSS mouthpiece Panchajanya from 1971 to 1974. Later he worked as editor of Navbharat Times.
Originally from Gaya in Bihar, he moved with his family to Delhi in 1967.
He is survived by his wife, son and three daughters.
Condoling his death, BJP President Rajnath Singh said it is a personal loss to him.