Medicare does not pay one hundred percent of all costs associated with dialysis treatment, though it covers a substantial portion for eligible beneficiaries diagnosed with end-stage renal disease. Generally, Medicare Part B covers eighty percent of the approved amount for outpatient dialysis treatments, leaving the remaining twenty percent coinsurance responsibility to the patient, supplemental Medigap insurance policies, or secondary Medicaid coverage. Additionally, patients must account for annual deductibles and the costs of specialized prescription medications, such as calcimimetics or iron supplements, unless they are enrolled in specialized Medicare Advantage plans designed to cap out-of-pocket medical expenses.