How are the main terms printed in the ICD-10-CM Index?

The main terms in the ICD-10-CM Index are indeed printed in boldface type. This formatting choice is designed to make these key terms stand out for easier identification when medical coders reference the index. The use of boldface helps coders quickly locate and differentiate between main terms and subterms or inclusion notes, which may use different formatting styles.

This organizational strategy aids in the efficient navigation of the index, allowing practitioners to accurately find diagnostic codes related to a patient's condition. In contrast to other styles such as italics or underlining, which might be used in different contexts or documents, the boldface specifically signals main terms in the ICD-10-CM Index, ensuring clarity and uniformity across coding practices.