International Standards in Health Insurance Law: From Universal Coverage to Patient Rights Across Nations

International health insurance law has evolved significantly over the past century, establishing frameworks that balance universal coverage aspirations with patient rights protection across diverse national contexts. This article examines the development and implementation of international standards in health insurance law, focusing on the transition from early social insurance models to contemporary universal health coverage (UHC) systems and the integration of human rights principles in patient care. Through analysis of international instruments, comparative health system models, and patient rights frameworks, this research demonstrates how international standards have shaped national health insurance policies while addressing persistent challenges in achieving equitable healthcare access. The findings reveal that while significant progress has been made toward UHC, approximately 4.5 billion people remain without full coverage of essential health services as of 2021. The study identifies five distinct healthcare system typologies among OECD countries and examines how human rights-based approaches to patient care complement traditional medical law frameworks. Key recommendations include strengthening primary healthcare systems, enhancing financial protection mechanisms, and developing comprehensive patient rights legislation that aligns with international human rights standards.