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Official Description

Duplex scan of upper extremity arteries or arterial bypass grafts; complete bilateral study

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

A duplex scan of the upper extremity arteries or arterial bypass grafts is a comprehensive vascular ultrasound study designed to assess the condition and functionality of the blood vessels in the arms. This procedure employs both B-mode imaging and Doppler ultrasound techniques to provide a detailed evaluation. During the examination, a clear gel is applied to the skin over the area of interest to facilitate the transmission of sound waves. A B-mode transducer is then placed on the skin, which generates real-time images of the arteries or any bypass grafts present. The Doppler component of the transducer is crucial as it measures the flow of blood within the arteries, providing insights into the direction and velocity of blood flow. The B-mode imaging utilizes ultrasonic sound waves that penetrate the skin and reflect off the arterial walls, creating visual representations of the vascular structures. Meanwhile, the Doppler probe detects sound waves that bounce off moving blood cells, converting these reflections into audible sounds. Changes in the pitch of these sounds can indicate variations in blood flow, such as reductions or complete obstructions. The data collected is processed by a computer, which produces color-enhanced video images that illustrate the speed and direction of blood flow, as well as any potential blockages. Additionally, spectral Doppler analysis is conducted to assess anatomical details and hemodynamic function, including the identification of arterial narrowing and plaque buildup. Following the procedure, the physician interprets the results and documents the findings in a written report. For a complete bilateral study, the appropriate code to use is 93930, while a unilateral or limited study is coded as 93931.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The duplex scan of upper extremity arteries or arterial bypass grafts is indicated for various clinical scenarios where assessment of blood flow and vascular integrity is necessary. The following conditions may warrant this procedure:

  • Suspected Vascular Occlusion The procedure is performed when there is a suspicion of blockage or narrowing in the arteries of the upper extremities, which may present as pain, weakness, or numbness in the arms.
  • Evaluation of Arterial Bypass Grafts This scan is indicated for patients who have undergone arterial bypass surgery, allowing for assessment of graft patency and function.
  • Monitoring of Peripheral Artery Disease (PAD) Patients with a history of PAD may require this study to evaluate the progression of the disease and the effectiveness of treatment interventions.
  • Assessment of Symptoms Symptoms such as claudication, coldness, or color changes in the arms may prompt the need for this duplex scan to determine underlying vascular issues.

2. Procedure

The duplex scan procedure involves several key steps to ensure accurate evaluation of the upper extremity arteries and any bypass grafts. The following outlines the procedural steps:

  • Preparation of the Patient The patient is positioned comfortably, typically lying down, with the upper extremities exposed. A clear gel is applied to the skin over the area to be examined, which aids in the transmission of sound waves during the ultrasound.
  • Application of the B-mode Transducer A B-mode transducer is placed on the skin, and the technician or physician moves it over the region of interest. This transducer emits ultrasonic sound waves that penetrate the skin and reflect off the arterial walls, generating real-time images of the arteries and any bypass grafts.
  • Utilization of the Doppler Probe The Doppler component of the transducer is activated to assess blood flow within the arteries. As the probe is moved, it detects sound waves that bounce off moving blood cells, converting these reflections into audible sounds that indicate the direction and velocity of blood flow.
  • Image and Sound Wave Analysis The reflected sound waves are processed by a computer, which creates color-enhanced video images that display the speed and direction of blood flow. The technician may also perform spectral Doppler analysis to gather additional information regarding the anatomy and hemodynamic function of the arteries.
  • Review and Interpretation After the duplex scan is completed, the physician reviews the images and sound data, providing a comprehensive written interpretation of the findings, which may include observations on arterial narrowing, plaque formation, or any other abnormalities detected during the study.

3. Post-Procedure

Post-procedure care for patients undergoing a duplex scan of the upper extremity arteries is generally minimal, as the procedure is non-invasive and does not typically require recovery time. Patients may resume normal activities immediately following the scan. However, it is essential for the physician to discuss the results with the patient, including any necessary follow-up actions based on the findings. If abnormalities are detected, further diagnostic testing or treatment options may be recommended. Patients should be advised to report any unusual symptoms or concerns to their healthcare provider following the procedure.

Short Descr UPPER EXTREMITY STUDY
Medium Descr DUP-SCAN UXTR ART/ARTL BPGS COMPL BI STUDY
Long Descr Duplex scan of upper extremity arteries or arterial bypass grafts; complete bilateral study
Status Code Active Code
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 1 - Diagnostic Tests for Radiology Services
Multiple Procedures (51) 6 - Special payment adjustment rules on the technical component (TC) of multiple diagnostic cardiovascular services apply...
Bilateral Surgery (50) 2 - 150% payment adjustment does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 0 - Payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Procedure or Service, Not Discounted when Multiple
Type of Service (TOS) 5 - Diagnostic Laboratory
Berenson-Eggers TOS (BETOS) I3F - Echography/ultrasonography - other
MUE 1
CCS Clinical Classification 197 - Other diagnostic ultrasound
26 Professional component: certain procedures are a combination of a physician or other qualified health care professional component and a technical component. when the physician or other qualified health care professional component is reported separately, the service may be identified by adding modifier 26 to the usual procedure number.
X5 Diagnostic services requested by another clinician: for reporting services by a clinician who furnishes care to the patient only as requested by another clinician or subsequent and related services requested by another clinician; this modifier is reported for patient relationships that may not be adequately captured by the above alternative categories; reporting clinician service examples include but are not limited to, the radiologist's interpretation of an imaging study requested by another clinician
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 by the same individual, the primary procedure or service may be reported as listed. the additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). note: this modifier should not be appended to designated "add-on" codes (see appendix d).
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. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
TC Technical component; under certain circumstances, a charge may be made for the technical component alone; under those circumstances the technical component charge is identified by adding modifier 'tc' to the usual procedure number; technical component charges are institutional charges and not billed separately by physicians; however, portable x-ray suppliers only bill for technical component and should utilize modifier tc; the charge data from portable x-ray suppliers will then be used to build customary and prevailing profiles
GC This service has been performed in part by a resident under the direction of a teaching physician
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
GZ Item or service expected to be denied as not reasonable and necessary
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
Q6 Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
52 Reduced services: under certain circumstances a service or procedure is partially reduced or eliminated at the discretion of the physician or other qualified health care professional. under these circumstances the service provided can be identified by its usual procedure number and the addition of modifier 52, signifying that the service is reduced. this provides a means of reporting reduced services without disturbing the identification of the basic service. note: for hospital outpatient reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well-being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
58 Staged or related procedure or service by the same physician or other qualified health care professional during the postoperative period: it may be necessary to indicate that the performance of a procedure or service during the postoperative period was: (a) planned or anticipated (staged); (b) more extensive than the original procedure; or (c) for therapy following a surgical procedure. this circumstance may be reported by adding modifier 58 to the staged or related procedure. note: for treatment of a problem that requires a return to the operating/procedure room (eg, unanticipated clinical condition), see modifier 78.
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
77 Repeat procedure by another physician or other qualified health care professional: it may be necessary to indicate that a basic procedure or service was repeated by another physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 77 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
79 Unrelated procedure or service by the same physician or other qualified health care professional during the postoperative period: the individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. this circumstance may be reported by using modifier 79. (for repeat procedures on the same day, see modifier 76.)
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
CG Policy criteria applied
CR Catastrophe/disaster related
GA Waiver of liability statement issued as required by payer policy, individual case
GW Service not related to the hospice patient's terminal condition
LT Left side (used to identify procedures performed on the left side of the body)
MG The order for this service does not have applicable appropriate use criteria in the qualified clinical decision support mechanism consulted by the ordering professional
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
Q5 Service furnished under a reciprocal billing arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
RT Right side (used to identify procedures performed on the right side of the body)
X1 Continuous/broad services: for reporting services by clinicians, who provide the principal care for a patient, with no planned endpoint of the relationship; services in this category represent comprehensive care, dealing with the entire scope of patient problems, either directly or in a care coordination role; reporting clinician service examples include, but are not limited to: primary care, and clinicians providing comprehensive care to patients in addition to specialty care
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
Date
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Notes
1992-01-01 Added First appearance in code book in 1992.
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