Which modifier might be applied to indicate a procedure was performed on a different site from the usual?

The modifier that indicates a procedure was performed at a different site from the usual is Modifier 59. This modifier is specifically used to denote a distinct procedural service, meaning that the procedure performed was separate and independent from other services provided on the same day. In surgical coding, it's essential to clarify when a procedure is not bundled with another service due to being conducted at a different anatomical site or for specific patient conditions.

In this case, using Modifier 59 effectively informs payers that although multiple procedures were performed, they were not related and did not overlap in terms of anatomy or purpose. It's a critical modifier to ensure proper reimbursement and to prevent denials based on the appearance of duplicative services.

The other modifiers mentioned serve different purposes and are not applicable in this context. For example, Modifier 51 indicates multiple procedures performed at the same session, Modifier 26 refers to the professional component of a procedure, and Modifier 33 relates to preventive services. Each of these modifiers has distinct uses that do not address the requirement for indicating a different site of service.