This document discusses health technology assessment (HTA) of medical devices from an international perspective. It defines HTA as a multidisciplinary process that systematically evaluates the medical, social, economic and ethical issues related to a health technology. The document then provides an overview of HTA for medical devices in Europe, Asia Pacific countries, the US, and discusses key considerations in assessing the value of devices. It notes that device value assessments consider clinical, financial and strategic factors, and balancing benefits against adoption costs is important. The future of HTA may involve more flexible and affordable evidence development approaches tailored to devices.