Which modifier indicates that a service was provided in a different location than usual?

The correct modifier that indicates a service was provided in a different location than usual is Modifier 59. This modifier is specifically used to denote that a procedure or service was distinct or independent from other services performed on the same day. It can imply that there were separate locations for the procedures involved, marking them as applicable even though they may typically occur in the same setting.

Modifier 59 is significant because it provides information about the circumstances of the service—highlighting that the procedure was not simply a duplication or continuation of a previous service but rather a separate encounter. This is particularly important in billing and coding, as it helps in ensuring that claims are accurately processed and reimbursed by insurers.

The other modifiers listed serve different purposes. Modifier 24, for instance, indicates an unrelated evaluation and management service during a postoperative period. Modifier 25 is used to signify a significant, separately identifiable evaluation and management service by the same physician on the same day of a procedure. Modifier 52 is for reduced services, indicating that a service was partially performed and cannot be billed at the full rate. Each of these modifiers addresses specific scenarios, but none specifically refer to a different location in which a service was provided.