Radiology Question for the Week of March 31, 2025

Question:

When should Modifier 73 be applied, and what conditions must be met for its use?

Answer:

Modifier 73 describes when the physician discontinues a procedure prior to the administration of anesthesia (local, general). Modifier 73 Defined Discontinued Outpatient Hospital/Ambulatory Surgery Center (ASC) Procedure prior to the Administration of Anesthesia: Due to extenuating circumstances or those that threaten the well-being of the patient, the physician may cancel a surgical or diagnostic procedure subsequent to the patient’s surgical preparation (including sedation when provided and being taken to the room where the procedure is to be performed) but prior to the administration of anesthesia (local, regional block(s), or general). Under these circumstances, the intended service that is prepared for but canceled can be reported by its usual procedure number and the addition of modifier 73. Note: The elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported.

This question was answered in our Breast & Bone Density Procedure Coding Guide. For more hot topics relating to radiology services, please visit our store or call us at 1.800.252.1578, ext. 2.