PhilHealth offers several benefits for elderly seniors, including inpatient and outpatient care, maternity benefits for senior mothers, and coverage for catastrophic illnesses. Seniors can also avail of discounts on certain healthcare services, medications, and preventive health check-ups. It's essential to register and maintain active membership to access these benefits. For a comprehensive list and specific eligibility details, it's best to consult the official PhilHealth website or contact their customer service.