This document summarizes the key provisions of Republic Act No. 10645, which mandates PhilHealth coverage for all senior citizens in the Philippines. The law amends Section 5 of Republic Act No. 7432, also known as the Expanded Senior Citizens Act of 2010, to require that all senior citizens be covered by PhilHealth's national health insurance program. Funding for seniors not currently covered will come from PhilHealth's National Health Insurance Fund. The law took effect 15 days after publication.