AWSRede Mater Dei de Saúde, a major Brazilian healthcare provider, faced high claim denial rates and operational inefficiencies in its hospital revenue cycle impacting cash flow and service delivery.To address these challenges, they deployed 12 AI agents orchestrated by Amazon Bedrock AgentCore, providing agent runtime, tool integration, memory management, and observability.The layered architecture includes Data Execution, Agent Execution, and Trust & Compliance layers ensuring governance, security, and regulatory compliance.This multi-agent AI approach resulted in a 517% ROI within four months, reduced authorization time by 66%, and cut surgery start delays by 33%.Continuous monitoring and evaluation of AI agents ensure stability, reliability, and auditability of revenue cycle processes, enhancing operational security and compliance.