Discontinued Procedures/Reduced Services – Modifiers 73 & 74

The term "Discontinued Procedure" designates a surgical or diagnostic procedure provided by a physician or other health care professional that was less than usually required for the procedure as defined in the Current Procedural Terminology (CPT®) book. This policy describes the billing instructions and guidelines when billing for a discontinued procedure using modifiers 73 or 74. Modifier 73: 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 cancelled 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. For physician reporting of a discontinued procedure, see modifier 53. Modifier 74 Discontinued Outpatient Hospital/Ambulatory Surgery Center (ASC) Procedure After Administration of Anesthesia: Due to extenuating circumstances or those that threaten the well-being of the patient, the physician may terminate a surgical or diagnostic procedure after the administration of anesthesia (local, regional block(s), general) or after the procedure was started (incision made, intubation started, scope inserted, etc.). Under these circumstances, the procedure started but terminated can be reported by its usual procedure number and the addition of modifier 74. Note: The elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. For physician reporting of a discontinued procedure, see modifier 53. <a id="