Original Medicare (Part A and Part B) does not cover routine hearing exams, hearing aids, or exams for fitting hearing aids. However, Medicare Part B does cover diagnostic hearing and balance exams if your doctor orders tests for a medical need like a recent hearing loss. If your doctor orders a diagnostic hearing test, then you would pay 20% of the amount approved by Medicare, plus the Medicare Part B deductible.
Some Medicare Advantage plans (Medicare Part C) do offer coverage for routine hearing exams and hearing aids. Please note that because each Medicare Advantage plan can be different, you need to compare plan benefits carefully to find one that meets of your specific needs.