Which of the following is considered a preventive service under Medicare?

Annual wellness visits are considered a preventive service under Medicare because they are designed to help beneficiaries maintain their health and well-being. These visits provide an opportunity for healthcare providers to assess a patient's health risks and create a personalized prevention plan. The focus is on preventing illness, managing chronic conditions, and promoting overall health rather than addressing existing health issues.

Medicare covers annual wellness visits without any copayment when the services are delivered by a qualified healthcare provider. This service is distinct from emergency room visits, inpatient hospital stays, and long-term care services, which do not primarily focus on preventive care but rather on treating emergencies, serious health issues, and ongoing care for patients with chronic conditions or disabilities, respectively.