Many people find the Official Coding Guidelines for ICD-10-PCS dense, confusing and repetitive. This book was developed by a coding teacher frustrated with textbooks that listed guidelines but did not explain them. In this publication, the guidelines and other confusing aspects of coding are translated into everyday English and placed in charts to help coders and students understand them. Examples are given for common surgical and ancillary procedures in each body system. The book includes: general PCS guidelines, guidelines for specific body system, summary of changes for 2020, a dictionary of PCS terms, and an index.