21 Prolonged Evaluation and Management Services: When the face-to-face or floor/unit service(s) provided is prolonged or otherwise greater than that usually required for the highest level of evaluation
22 Increased Procedural Services: When the work required to provide a service is substantially greater than typically required, it may be identified by adding modifier 22 to the usual procedure code.
23 Unusual Anesthesia: Occasionally, a procedure, which usually requires either no anesthesia or local anesthesia, because of unusual circumstances must be done under general anesthesia
24 Unrelated Evaluation and Management Service by the Same Physician During a Postoperative Period:
25 Significant, Separately Identifiable Evaluation and Management Service by the Same Physician on the Same Day of the Procedure or Other Service:
26 Professional Component: Certain procedures are a combination of a physician component and a technical component.
27 Multiple Outpatient Hospital E/M Encounters on the Same Date
32 Mandated Services: Services related to mandated consultation and/or related services (eg, third-party payer, governmental, legislative or regulatory requirement) may be identified by adding modifier 3
47 Anesthesia by Surgeon: Regional or general anesthesia provided by the surgeon may be reported by adding modifier 47 to the basic service. (This does not include local anesthesia.)
50 Bilateral Procedure: Unless otherwise identified in the listings, bilateral procedures that are performed at the same operative session, should be identified by adding modifier 50
51 Multiple Procedures: When multiple procedures, other than E/M services, physical medicine and rehabilitation services, or provision of supplies (eg, vaccines), are performed at the same session
52 Reduced Services: Under certain circumstances a service or procedure is partially reduced or eliminated at the physician's discretion.
53 Discontinued Procedure: Under certain circumstances, the physician may elect to terminate a surgical or diagnostic procedure.
54 Surgical Care Only: When one physician performs a surgical procedure and another provides preoperative and/or postoperative management,
55 Postoperative Management Only: When one physician performed the postoperative management and another physician performed the surgical procedure,
56 Preoperative Management Only: When one physician performed the preoperative care and evaluation and another physician performed the surgical procedure
57 Decision for Surgery: An evaluation and management service that resulted in the initial decision to perform the surgery
58 Staged or Related Procedure or Service by the Same Physician During the Postoperative Period:
59 Distinct Procedural Service: Under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-E/M services performed on the same day.
62 Two Surgeons: When two surgeons work together as primary surgeons performing distinct part(s) of a procedure, each surgeon should report his/her distinct operative work by adding modifier 62
63 Procedure Performed on Infants less than 4 kg
66 Surgical Team: Under some circumstances, highly complex procedures (requiring the concomitant services of several physicians, often of different specialties,
73 Discontinued Out-Patient 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
74 Discontinued Out-Patient Hospital/Ambulatory Surgery Center (ASC) Procedure After Administration of Anesthesia: Due to extenuating circumstances or those that threaten the well being of the patient
76 Repeat Procedure or Service by Same Physician
77 Repeat Procedure by Another Physician
78 Unplanned Return to the Operating/Procedure Room by the Same Physician Following Initial Procedure for a Related Procedure During the Postoperative Period
79 Unrelated Procedure or Service by the Same Physician During the Postoperative Period
80 Assistant Surgeon:
81 Minimum Assistant Surgeon
82 Assistant Surgeon (when qualified resident surgeon not available): The unavailability of a qualified resident surgeon is a prerequisite for use of modifier 82
90 Reference (Outside) Laboratory: When laboratory procedures are performed by a party other than the treating or reporting physician
91 Repeat Clinical Diagnostic Laboratory Test:
92 Alternative Laboratory Platform Testing
99 Multiple Modifiers: Under certain circumstances two or more modifiers may be necessary to completely delineate a service.
47 Heisser Lane
Farmingdale, NY 11735
Phone (516) 694-3117 or (800) 451-1719 / Fax (516) 694-2839

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