The 2020 ICD-10-CM Expert for Physicians – Spiral-bound by Optum360º is a comprehensive textbook on medical coding and billing, specifically focusing on the ICD-10-CM system. This early edition publication, released in 2019, is authored by Optum and published by Optuminsight, Incorporated. The book is designed in a spiral format for easy reference and is written in English, making it accessible to a wide range of medical professionals. With a specific focus on the medical subject area, this book is a valuable resource for those in the field of Allied Health Services.