Lean healthcare is a quality improvement philosophy that originated from Toyota's lean manufacturing principles. It aims to maximize value for patients through continuous improvement efforts. The key lean principles for healthcare include an attitude of continuous improvement using the PDSA cycle, creating value by improving outcomes while reducing costs and non-monetary burdens for all stakeholders, having a unity of purpose through clear organizational priorities, respecting frontline workers by empowering them to solve problems, using visual tools to track metrics, and establishing flexible standardized processes. Implementing lean requires transforming the organizational culture to prioritize frontline innovation and ongoing improvement.