How many categories are there in the CPT coding system?

The CPT coding system is organized into three main categories: Category I, Category II, and Category III.

Category I contains the most commonly used codes and is divided into sections based on the type of service provided, such as evaluation and management, anesthesia, surgery, radiology, pathology, and laboratory. These codes are primarily used for reporting medical procedures and services.

Category II codes are supplemental tracking codes that are used for performance measurement. They help to collect data for quality improvement and can track the use of specific clinical services.

Category III codes are temporary codes that are assigned for emerging technologies, services, and procedures. These are used to code new and experimental treatments that do not yet have a permanent Category I code.

Understanding the three categories is essential for proper coding and billing practices, as each serves a distinct purpose in the healthcare reimbursement process.