The EU AI Act's core obligations for high-risk AI systems (conformity assessment, technical documentation, human oversight, and post-market monitoring) are scheduled to apply in full from August 2026, and healthcare AI sits squarely in the high-risk tier. This reaches beyond Europe: a US health system with EU operations, research collaborations, or vendors that sell into the EU market can inherit these obligations through its supply chain. Note that the timeline is under active revision, with proposals to push some standalone high-risk systems into late 2027, so treat the date as a moving target worth watching rather than a fixed deadline. The governance action now is simple: know which of your AI vendors carry EU exposure.

