Medical Coding Barchart Updated for 2018 ICD-10 guidelines, this study guide covers core essentials of coding clearly and succinctly. Author Shelley C. Safian, PhD, RHIA, CCS-P, COC, CPC-I, and AHIMA-approved ICD-10-CM/PCS trainer, used her knowledge and experience to provide the largest number of valuable facts you can find in 6 pages. This guide is a must-have for students seeking coding certification, as well as a great desktop refresher for professionals.