Data interoperability plays a crucial role in health informatics by enabling different health information systems to exchange and make use of information seamlessly. This ensures that patient data, regardless of the source, can be accessed, shared, and analyzed across various platforms and providers. Interoperability facilitates coordinated care, reduces errors, and improves patient outcomes by providing healthcare professionals with comprehensive and up-to-date information. It also supports regulatory compliance and enhances research capabilities through the integration of diverse data sets.