Which Medicare program requires no cost share for patients aged 65 years and older?

The correct answer highlights Medicare Part B, which indeed requires no cost-sharing for certain preventive services for patients aged 65 years and older. Medicare Part B is designed to cover outpatient care, preventive services, and some inpatient services. For beneficiaries, many preventive services, such as annual wellness visits and certain immunizations, are provided at no cost, meaning there is no deductible, coinsurance, or copayment for these services.

This aspect of Medicare Part B is particularly beneficial for the aging population, as it encourages preventive health measures without imposing additional financial barriers. In comparison, while other parts of Medicare, like Part D, which addresses prescription drug coverage, or Medicare Part C, which is Medicare Advantage, generally involve cost-sharing in the form of premiums, copayments, or deductibles, these do not offer the same full waiving of costs for preventive services as Part B does. Medicaid, while providing health coverage and sometimes having minimal cost-sharing depending on the state, is not a Medicare program and thus does not apply to this specific question.