Any patient going abroad for treatment purposes, needs to submit all the necessary documents to City Bank, such as appointment letter including invoices from hospitals abroad and a referral letter from the concerned physician in Bangladesh. City Bank, keeping all the attested photocopies, opens a ‘City Medical File’ in the name of that particular patient. City Bank then remits to that hospital the foreign currencies as the patient’s file opening bank. By opening medical file, a patient can meet his/her financial requirements for treatment abroad.