The ICD-10-CM Coding Expert OPTUM for Physicians Spiral 2025 is a comprehensive textbook authored by Optum, focusing on medical coding for physicians. Published by OptumInsight, Incorporated, this textbook provides in-depth information on ICD-10-CM coding in a spiral format, making it convenient for quick reference during educational studies and professional practice. With a proficiency level targeted at adults and further education, this textbook is designed for those looking to enhance their understanding and skills in the field of medical coding.