The limit is Rs.60,000 for senior citizens. The eligibility is for the amount “actually paid” as reduced by any amount received from the insurer or employer. The diseases covered are listed under Rule 11DD.
The certificate has to be filed in Form 10-I and has to accompany the return for the claim.The deduction is limited to what is actually paid or Rs.40,000-60,000 for treatment of these specified ailments only and that too subject to reduction of what is met by the employer or insurer.
It is useful if you pay your tax.