What is the primary purpose of CPT modifiers?

The primary purpose of CPT modifiers is to provide additional information about the procedure performed. Modifiers are two-digit codes appended to the main CPT code that clarify specifics about the service or procedure. They may indicate a change in the service performed, such as whether the procedure was bilateral, whether it was repeated, or if there were specific circumstances surrounding the performance of the service that are relevant for billing and documentation purposes.

For example, a modifier might indicate that a procedure was done on both sides of the body, or that a service was performed under unusual circumstances. By using modifiers, healthcare providers ensure that the billing accurately reflects the care provided, which is critical for reimbursement and for maintaining clear medical records.

In contrast, while other options touch on important aspects of coding and billing, they don't capture the essence of what modifiers are designed to communicate. Modifiers specifically enhance the understanding of the procedure and its context, making option C the most accurate choice.