Ophthalmic Coding Specialist Practice Test

What does a black cross preceding a CPT code indicate?

1. A change in how the code is billed

2. It indicates that this is an add-on code

3. A denial of payment for procedures using this code

4. It shows the code is relevant for only certain patients

The correct answer is: It indicates that this is an add-on code

The correct answer, indicating that a black cross preceding a CPT code signifies it is an add-on code, aligns with the coding conventions established within the Current Procedural Terminology (CPT) system. Add-on codes are supplementary codes that provide additional information regarding the procedure being performed and cannot stand alone. They are used to denote enhanced services that accompany a primary procedure. By marking these codes with a black cross, the coding system highlights their nature as dependent on other codes, ensuring clarity for billing and reimbursement processes. This helps coders and billers understand that while the add-on code provides more detailed service information, it should only be billed in conjunction with the appropriate primary procedure code. Regarding the other options, the markings do not indicate changes in billing practices, denials of payment, or limitations on patient applicability. Therefore, recognizing the significance of the black cross in relation to add-on codes is essential for accurate coding and billing within ophthalmic practices.