Modifier 58 can be applied under which condition?

Modifier 58, which indicates a staged or related procedure during the postoperative period, is applicable when a subsequent procedure is planned prospectively during the original procedure. This modifier is used to indicate that the follow-up procedure is not only related to the original procedure but was also intended and scheduled at the time of the first operation.

The application of this modifier helps to clarify that the second procedure is part of the treatment plan and necessary to achieve the desired outcome, ensuring proper coding and reimbursement. In this context, it reflects the continuity of care where interventions are staged rather than performed in isolation or on an ad hoc basis.

Other conditions mentioned do not align with the intent or application of modifier 58. For instance, if a procedure is unrelated to the original treatment or done solely for diagnostic purposes, modifier 58 would not provide clarity nor convey the appropriate relationship between the procedures. Similarly, just performing a procedure during a follow-up visit does not meet the criterion of being planned prospectively at the time of the first procedure. Thus, the option involving a planned follow-up reflects the appropriate use of modifier 58.