While it is a superior self-learning guide for students on their own, ICD-10-CM Quick Learn also is an exceptional auxiliary tool for teachers in the classroom environment. Updated for 2021. Several learning strategies are combined to make this the easiest and most interesting way for students to gain and retain critical knowledge and give them practical experience from the very beginning. The approach is informal and friendly with a variety of scenario based practice exercises that keep the student fully engaged. The exercises are followed by immediate feedback. Scenario-based questions add interest and keep the student's attention. Important information is reviewed several times in varying formats including Quick Quizzes and Chapter Quizzes, eliminating the need for rote memorization and repetitiveness utilized in older style textbooks. The Basic Concepts chapter explains the structure and conventions in the ICD-10-CM code book. Each chapter in ICD-10-CM Quick Learn exactly follows the chapters in the ICD-10-CM by chapter number and name. Teachers may choose to use the Half-Time Review and Final Review as exams, or the review questions can form the basis of instructor-generated tests. This Quick Learn Guide can be used in the classroom, assigned as homework, or a combination of the two methods. Each chapter reviews and builds upon the important information contained in the prior chapters. It combines humor, illustrations and a high-level of interaction, combining repetition with novelty in order to maximize learning.