Final answer:
The question concerns the Clinical Modification of the International Classification of Diseases, Ninth Revision, which adds detail to morbidity and diagnostic codes used in the medical industry, particularly in the United States.
Step-by-step explanation:
The question refers to the Clinical Modification (CM) of the International Classification of Diseases, Ninth Revision (ICD-9), which provides an alternative view of the contents of ICD-9-CM. This resource contains the official system for assigning codes to diagnoses and procedures associated with hospital utilization in the United States. The CM is an extension to ICD-9 which allows for more detailed classification of morbidity data. This classification system is used by physicians, health care providers, coders, and others in the medical industry to accurately record and identify diagnosis information for reimbursement purposes, statistics, and in the interest of maintaining public health records.