With coverage of both inpatient and outpatient coding, Understanding Medical Coding: A Comprehensive Guide, Third Edition teaches students everything they need to know about medical coding. Through clear, step-by-step instructions, students are taught how to code a claim correctly, link the correct CPT and ICD-9-CM codes for reimbursement, understand adjustments as well as how and when to bill patients, and determine what to do if there is a denial or rejection. Coverage has been thoroughly updated to include information on ICD-10-CM and how it compares to ICD-9-CM. CPT coding and modifiers are also discussed, as well as more code-specific information, concentrating on specialty coding and the levels of coding. Additional case studies, practice exercises, tips, examples, tables, charts, and photos have been added in order to improve student performance and ensure that they are well prepared for a medical coding position in a variety of settings.