How many levels of CPT modifiers exist?

The correct answer is that there are two levels of CPT modifiers. CPT modifiers are divided into two main categories: Level I and Level II.

Level I modifiers are those that are recognized in the CPT code set itself and are used to provide additional information about the procedure or service being performed, often indicating something specific about the service, such as whether it was performed bilateral, unilaterally, or in multiple instances.

Level II modifiers, on the other hand, are often utilized with codes from other coding systems, such as those from the Healthcare Common Procedure Coding System (HCPCS). These modifiers serve to provide further specificity and clarification regarding the service, such as one that indicates the service was provided in a different setting (like a hospital or outpatient facility).

Understanding these two levels allows healthcare providers, coders, and billers to accurately report services rendered and to facilitate proper reimbursement.