What is the primary purpose of modifiers in CPT coding?

The primary purpose of modifiers in CPT coding is to provide additional information about a procedure or service. Modifiers are two-digit codes that are appended to the main procedure codes to clarify specific circumstances or details surrounding the service performed. For example, a modifier can indicate that a procedure was performed on a specific site, whether it was bilateral, or if it was a staged procedure. By utilizing modifiers, healthcare providers can communicate variations in services that may affect the interpretation of the code, ensuring that the coding accurately reflects the services rendered and thus aiding in proper billing and reimbursement. Using modifiers helps prevent misunderstandings and clarifies the context of the service without necessitating the creation of new codes for every variation or circumstance.