Medical Reimb expenses incurred to his brother

Yes

Exemptions of medical expenses incurred by or on behalf of the employee
# The following medical facilities provided to an employee are exempt from income tax:
# Treatment of an employee or his family in any hospital maintained by the employer;
# Reimbursement of any medical expenditure actually incurred by the employee for himself or his family :
In any hospital maintained or approved by the Government, any local authority; or For prescribed diseases or ailments in any hospital approved by the Chief Commissioner, or
Up to Rs. 15,000, actually incurred by the employee on medical (other than the treatment referred to above);

Now its clear that you can take the benefit.