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Official Description

Duplex scan of extracranial arteries; unilateral or limited study

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 93882 refers to a duplex scan of the extracranial arteries, specifically indicating a unilateral or limited study. This procedure is a specialized vascular ultrasound that focuses on evaluating the extracranial arteries, which primarily include the common carotid and external carotid arteries. The term "duplex scan" signifies the use of both B-mode imaging and Doppler ultrasound techniques to assess the structure and function of these arteries. During the procedure, a clear gel is applied to the skin over the targeted arteries to facilitate the transmission of sound waves. A B-mode transducer is then placed on the skin, generating real-time images of the artery's anatomy. In conjunction with the B-mode imaging, a Doppler probe integrated within the transducer captures information regarding the pattern and direction of blood flow within the artery. The B-mode transducer emits ultrasonic sound waves that penetrate the skin and reflect off the arterial walls, allowing for detailed visualization of the artery. Meanwhile, the Doppler component 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 reduced flow or complete obstruction of a vessel. The data collected during the duplex scan is processed by a computer, which generates color-coded video images that illustrate the speed and direction of blood flow, as well as any potential obstructions. Additionally, spectral Doppler analysis is performed to provide further insights into the anatomical structure and hemodynamic function of the arteries, including the detection of narrowing or plaque formation. Following the completion of the duplex scan, the physician reviews the findings and prepares a written interpretation, which is essential for clinical decision-making. For a comprehensive evaluation involving both sides of the carotid arteries, the code 93880 should be utilized, while 93882 is specifically designated for unilateral or limited studies.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The duplex scan of extracranial arteries (CPT® Code 93882) is indicated for various clinical scenarios where assessment of blood flow and arterial structure is necessary. The following conditions may warrant this procedure:

  • Evaluation of Carotid Artery Disease This procedure is performed to assess for the presence of carotid artery disease, which may include stenosis or occlusion.
  • Symptoms of Transient Ischemic Attack (TIA) Patients presenting with symptoms suggestive of TIA may require this study to evaluate blood flow in the carotid arteries.
  • Assessment of Stroke Risk The duplex scan can help determine the risk of stroke by identifying abnormalities in blood flow or arterial structure.
  • Monitoring of Known Vascular Conditions Patients with previously diagnosed vascular conditions may undergo this study to monitor changes in their arterial health over time.

2. Procedure

The procedure for a duplex scan of the extracranial arteries involves several key steps to ensure accurate imaging and assessment.

  • Preparation of the Patient The patient is positioned comfortably, typically lying down, to allow easy access to the neck area where the common and external carotid arteries are located. The skin over the arteries is cleaned, and a clear gel is applied to enhance the transmission of sound waves during the ultrasound.
  • Application of the B-mode Transducer A B-mode transducer is placed on the skin over the arteries being studied. This transducer emits ultrasonic sound waves that penetrate the skin and reflect off the arterial walls, creating real-time images of the artery's structure on a monitor.
  • Utilization of the Doppler Probe The Doppler probe, integrated within the B-mode transducer, is used to assess blood flow within the artery. As the probe is moved over the artery at various angles, it captures sound waves that bounce off moving blood cells, providing information on the direction and velocity of blood flow.
  • Image and Sound Wave Analysis The reflected sound waves are processed by an amplifier, converting them into audible sounds. Changes in pitch indicate variations in blood flow, such as reduced flow or complete obstruction. The computer processes the data to generate color-coded images that illustrate blood flow dynamics.
  • Completion of the Study After the necessary images and Doppler data are collected, the physician reviews the duplex scan results. A written interpretation of the findings is then prepared, summarizing the anatomical and hemodynamic information obtained during the study.

3. Post-Procedure

Post-procedure care for a duplex scan of the extracranial 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. The physician will review the results and discuss any necessary follow-up actions based on the findings. If abnormalities are detected, further diagnostic testing or treatment options may be recommended. It is important for patients to understand the significance of the results and to follow any additional instructions provided by their healthcare provider.

Short Descr EXTRACRANIAL UNI/LTD STUDY
Medium Descr DUPLEX SCAN EXTRACRANIAL ART UNI/LMTD STUDY
Long Descr Duplex scan of extracranial arteries; unilateral or limited 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) 0 - 150% payment adjustment for bilateral procedures 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) I3D - Echography/ultrasonography - carotid arteries
MUE 1
CCS Clinical Classification 192 - Diagnostic ultrasound of head and neck

This is a primary code that can be used with these additional add-on codes.

0690T Add-on Code MPFS Status: Carrier Priced APC N Quantitative ultrasound tissue characterization (non-elastographic), including interpretation and report, obtained with diagnostic ultrasound examination of the same anatomy (eg, organ, gland, tissue, target structure) (List separately in addition to code for primary procedure)
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.
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).
LT Left side (used to identify procedures performed on the left side of the body)
RT Right side (used to identify procedures performed on the right side of the body)
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
GA Waiver of liability statement issued as required by payer policy, individual case
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
GC This service has been performed in part by a resident under the direction of a teaching physician
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
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
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.)
95 Synchronous telemedicine service rendered via a real-time interactive audio and video telecommunications system: synchronous telemedicine service is defined as a real-time interaction between a physician or other qualified health care professional and a patient who is located at a distant site from the physician or other qualified health care professional. the totality of the communication of information exchanged between the physician or other qualified health care professional and the patient during the course of the synchronous telemedicine service must be of an amount and nature that would be sufficient to meet the key components and/or requirements of the same service when rendered via a face-to-face interaction. modifier 95 may only be appended to the services listed in appendix p. appendix p is the list of cpt codes for services that are typically performed face-to-face, but may be rendered via a real-time (synchronous) interactive audio and video telecommunications system.
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)
CR Catastrophe/disaster related
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
GW Service not related to the hospice patient's terminal condition
GX Notice of liability issued, voluntary under payer policy
GY Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit
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
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
X4 Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period
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
Action
Notes
2021-01-01 Note Guidelines changed.
2013-01-01 Changed Short Descriptor changed.
1992-01-01 Added First appearance in code book in 1992.
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