What does modifier 26 signify when attached to a procedure code?

Modifier 26 is utilized to indicate that only the professional component of a service is being billed when attached to a procedure code. This modifier is particularly relevant in cases where a procedure encompasses both a technical component (such as the equipment and its operation) and a professional component (the interpretation of the results or findings).

When modifier 26 is used, it clarifies that the billing is specifically for the healthcare provider's professional services, distinguishing it from any technical services that may be billed separately. This is essential in ensuring accurate billing practices and clear communication regarding the type of services provided, particularly in situations involving diagnostic tests or procedures that have both professional and technical aspects.

The other options are not correct because they do not accurately describe the function of modifier 26. For instance, modifier 26 does not pertain to the setting in which the procedure was performed, nor does it indicate coverage for both components of a service. It strictly denotes the professional aspect of the service billed.