Final answer:
The CM in ICD-10-CM stands for Clinical modification. It is a coding system used in the U.S. healthcare system.
Step-by-step explanation:
The CM in ICD-10-CM stands for Clinical modification. ICD-10-CM is the International Classification of Diseases, 10th Revision, Clinical Modification. It is a coding system that classifies and codes diagnoses and procedures for billing and statistical purposes in the United States healthcare system.