I want to claim rebate u/s 80DDB while filling my IT returns(Chronic renal failure for my father) in India. I have my form 16 and form 10-I approved by the medical board. Please let me know: 1. How to claim the rebate while filling returns. Should I enter in the ITR1 the amount that is mentioned in the Form 16 or the recalculated one after deduction of the claim? 2. Can I do it via efilling or it can be done only manually? 3. Do I need to attach the certificate (original/copy?) along with the ITR1/acknowledgement for verfication? 4. What other documents are required? Kindly provide info in this regard. Thanks