This document discusses building climate-resilient health systems. It notes that climate change undermines health determinants and increases disease and deaths. Those who contribute least to climate change often experience the most impacts. While some health facilities lack energy access, healthcare is now a significant carbon emitter. The document outlines 10 components for building climate-resilient health systems, including conducting vulnerability assessments, developing health adaptation plans, and accessing climate finance. About half of countries have climate change health strategies but few have funding to implement plans. Multilateral climate funds do not adequately prioritize health protection. The adaptation action coalition aims to strengthen health system resilience through vulnerability assessments and adaptation plans.