The amount you pay for maintenance drugs depends on your Medical Plan coverage option and the cost of the drug itself. If you enroll in Options A or B, your deductible is waived for mail order if you use mail order or retail 90. For Option C, you will not need to pay toward the deductible if the maintenance medication is also considered preventive. For non-preventive maintenance medications, you will be required to meet the combined medical and prescription drug deductible. The cost for maintenance medications at home delivery and participating retail 90 pharmacies will generally be similar.