What is indicated by the use of the modifier XP when billing?

The use of the modifier XP is intended to indicate that a procedure was performed by a different provider or a different facility than the one that typically performs that service. This modifier helps to clarify the billing by specifying that while the same procedure might generally be performed in a certain context, it was executed under different conditions or by a different entity.

This clarification is crucial in the billing process because it influences reimbursement decisions, ensuring that claims are processed accurately based on the unique circumstances surrounding the provision of that service. By using the XP modifier, healthcare providers provide essential information that distinguishes their claims from similar ones that may not have the same context.

In contrast, other options address different situations that are not applicable to the specific intent of the XP modifier, which clarifies the relationship between the providers rather than detailing variations in techniques, multiple procedures by the same practitioner, or atypical services.