Final answer:
ICD-10-PCS is a unique system designed to classify and code medical procedures.
Step-by-step explanation:
The correct answer is C) Classification of procedures.
ICD-10-PCS (International Classification of Diseases, Tenth Revision, Procedure Coding System) is a unique system used to classify and code medical procedures. It is designed to provide a standardized way to categorize and record procedures performed in healthcare settings. The system uses alphanumeric codes to represent different types of procedures, allowing for accurate documentation and coding.