In CPT coding, what is a modifier primarily used to indicate?

In CPT coding, a modifier is primarily used to indicate changes in the procedure performed. Modifiers provide additional details about the service that was rendered, allowing for a more accurate representation of the procedure in the coding system. For instance, a modifier can suggest that a procedure was altered in some way, such as being performed on a different anatomical site or under unusual circumstances. This adaptability is crucial for ensuring that the healthcare provider is appropriately reimbursed for the services rendered, reflecting the specific nuances of each case.

The use of modifiers enhances the clarity and precision of coding, which is essential for maintaining accurate medical records, facilitating billing processes, and supporting statistical data collection in healthcare. By indicating these changes, modifiers help distinguish between services that may appear similar but differ in their execution or context.