Master the skills needed for medical coding today with Green's best-selling 3-2-1 CODE IT!, 2021 EDITION. Updated yearly to reflect the most recent changes, this easy-to-use medical coding guide is written specifically for beginning coders. Updates address the latest changes to ICD-10-CM, ICD-10-PCS, CPT (R) and HCPCS Level II coding sets, including CDC's new ICD-10-CM search tool website and new CPT (R) 2021 codes and descriptions. This well-organized, intuitive approach begins with diagnosis coding before progressing to more in-depth coding of procedures and services. Separate chapters differentiate inpatient and outpatient coding as well as general and specific coding guidelines. Memorable examples, clearly defined terms and hundreds of printed and digital practice opportunities help you master concepts. You also work with computer-assisted coding cases and professional tools in preparation for professional coding credentials.