More than a week after veteran filmmaker Hrishikesh Mukherjee was hospitalised for pneumonia and sepsis, his condition remains serious, doctors said Monday.

The 83-year-old Dadasaheb Phalke Award winner's health remains stable but serious and the doctors are "trying their best to bring him back to normal" so that he can be discharged, officials at the Lilavati Hospital said.

The director, known for his humorous-philosophical takes on the middle class, has been suffering from chronic renal failure and was admitted to the hospital June 3.

"He is still undergoing dialysis and his vital parameters are all stable. Yet it is too early to say when he will be back to normal," a hospital spokesperson said.