How many categories are in the CPT coding system?

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

Category I codes are the most commonly used codes, representing a wide range of procedures and services that are performed by healthcare providers. These codes include specific numerical codes to describe medical, surgical, and diagnostic services.

Category II codes are supplementary codes that health care providers can use for tracking performance measures and improving the quality of care. They are optional and not required for billing.

Category III codes are temporary codes used for emerging technologies, services, and procedures that are not yet widely accepted or practiced. These codes help to collect data on new and experimental procedures, which may eventually be moved into Category I if proven effective and necessary.

Understanding these categories helps coders select the appropriate codes for billing and documentation in accordance with the services provided. Each category serves a unique purpose within the coding system, contributing to the overall functionality and effectiveness of clinical documentation and healthcare billing processes.