The main purpose of this legislation is to improve the detection of cognitive impairments, such as Alzheimer's disease, during Medicare's annual wellness visits and initial preventive physical examinations. The goal is to ensure that older adults receive timely assessments for cognitive issues, which can lead to better care planning and support for both patients and their caregivers. Key provisions of the legislation include the requirement that cognitive impairment detection be included in the Medicare annual wellness visit and initial preventive physical examination.