This document presents an overview of how various European institutions are integrating Complementary and Integrative Medicine (CIM) into clinical care, particularly in oncology and mental health. It showcases case studies from hospitals and regional health systems in countries like Italy, Germany, the UK, Switzerland, and the Netherlands. Readers will find examples of evidence-based practices, policy support, and clinical models that incorporate therapies such as acupuncture, homeopathy, phytotherapy, and lifestyle interventions within public healthcare.