This course provides information on the diseases, code structure, and chapter-specific guidelines pertaining to eyes and ears, nose, and throat (ENT) services. This lesson focuses on eye conditions in ICD-10-CM Chapter 7, Diseases of the Eye and Adnexa (H00-H59); Chapter 8, Diseases of the Ear and Mastoid Process (H60-H95); and Chapter 10, Diseases of the Respiratory System (J00-J99,) as well as eye and ENT-related conditions in Chapter 21, Factors Influencing Health Status and Contact with Health Services (Z00-Z99). Documentation for eye conditions in relation to risk adjustment is also discussed. Disclaimer: Before beginning this course, you should have access to the most recent version of ICD-10-CM (International Classification of Diseases, Tenth Revision, Clinical Modification). Refer to the Resources section to find and download the necessary documents. The codes and information in this course receive a comprehensive review annually and are updated as needed.