Coding is a skill requiring in-depth knowledge of anatomy and physiology, coding guidelines, and documentation issues. Novice and experienced coders will have questions and when the code book and coding guidelines do not have the answer, the Ingenix Coders Desk Reference for Diagnoses does. With this comprehensive resource, you can reduce coding errors and improve coding confidence by gaining a better understanding of the clinical meanings behind codes and referencing essential coding tips before assigning a code.