What does a plus sign mean before CPT code?

When a plus sign (+) appears before a Current Procedural Terminology (CPT) code, it typically signifies an add-on code. Add-on codes are used to report additional services or procedures performed in conjunction with the primary CPT code. These codes represent distinct components or modifiers of the main procedure and provide a more detailed and accurate documentation of the services provided.

Using add-on codes with a plus sign (+) allows healthcare providers to accurately reflect the complexity and nature of the services performed during patient encounters. By appending these codes, providers can specify and clarify specific portions of the procedure rather than reporting one all-inclusive code. This practice aids in ensuring appropriate reimbursement and transparent billing practices while improving healthcare data collection and communication.