Book excerpt: This significantly expanded and newest edition of the bestselling HIMSS Dictionary of Health Information Technology Terms, Acronyms, and Organizations has been developed and extensively reviewed by more than 50 industry experts. The sixth edition of this dictionary serves as a quick reference for students, health information technology professionals, and healthcare executives to better navigate the ever-growing health IT field and includes new terms used as a result of the COVID-19 pandemic and will serve as a resource for HIMSS’ new certification based on digital health transformation as well as for those taking the CPHIMS and CAHIMS certification exams. This valuable resource includes more than 3,000 definitions, 30 organizations, and numerous new references. Definitions of terms for the information technology and clinical, medical, and nursing informatics fields are updated and included. This sixth edition also includes an acronym list with cross-references to current definitions, new word-search capability, and a list of health IT-related associations and organizations, including contact information, mission statements, and web addresses. Academic and certification credentials are also included.