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Official Description

Ultrasound, breast, unilateral, real time with image documentation, including axilla when performed; complete

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

A unilateral breast ultrasound, designated by CPT® Code 76641, is a diagnostic imaging procedure that utilizes real-time ultrasound technology to visualize the breast and, when applicable, the axillary region. This procedure is particularly valuable in the assessment of breast abnormalities that may have been identified during a physical examination or through mammographic imaging. The ultrasound technique is adept at distinguishing between solid masses and fluid-filled cysts, as well as providing detailed information about the structural characteristics of the abnormal area and the surrounding breast tissue. During the examination, the patient is positioned supine, with the arm on the side being examined raised above the head to optimize access to the breast. Acoustic coupling gel is applied to ensure effective transmission of the ultrasound waves, and a transducer is placed firmly against the skin. The transducer emits ultrasonic wave pulses, which penetrate the breast tissue and are reflected back, creating images based on the echoes received. This comprehensive examination includes evaluation of all four quadrants of the breast, as well as the area directly behind the areola, to ensure a thorough assessment. The physician subsequently reviews the captured images and generates a written interpretation of the findings, which is crucial for determining the next steps in patient care.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The ultrasound of the breast, as described by CPT® Code 76641, is indicated for various clinical scenarios where further evaluation of breast abnormalities is necessary. The following conditions may warrant this procedure:

  • Breast Abnormalities Detected: This includes any irregularities found during a physical examination or identified on mammography that require further investigation.
  • Palpable Masses: The procedure is often performed when a lump or mass is felt in the breast, allowing for differentiation between solid and cystic formations.
  • Follow-Up on Previous Findings: Patients with a history of breast issues may require ultrasound to monitor changes or developments in previously identified areas of concern.
  • Assessment of Axillary Lymph Nodes: When indicated, the ultrasound can also evaluate lymph nodes in the axillary region for any signs of abnormality.

2. Procedure

The procedure for performing a complete unilateral breast ultrasound involves several key steps to ensure accurate imaging and assessment. The following outlines the procedural steps:

  • Step 1: Patient Positioning The patient is positioned supine on the examination table, with the arm on the side being examined raised above the head. This positioning facilitates optimal access to the breast tissue and enhances the quality of the ultrasound images.
  • Step 2: Application of Acoustic Coupling Gel A layer of acoustic coupling gel is applied to the breast. This gel is essential for effective transmission of the ultrasound waves, as it eliminates air pockets that could interfere with imaging.
  • Step 3: Transducer Placement The ultrasound transducer is placed firmly against the skin of the breast. The transducer emits ultrasonic waves that penetrate the breast tissue and capture echoes that are reflected back.
  • Step 4: Image Acquisition The transducer is moved back and forth over the breast, systematically scanning all four quadrants and the area behind the areola. This thorough examination allows for comprehensive imaging of the breast tissue and any abnormalities present.
  • Step 5: Image Review and Interpretation After the imaging is complete, the physician reviews the ultrasound images. A detailed written interpretation is then generated, summarizing the findings and any characteristics of the identified abnormalities.

3. Post-Procedure

Post-procedure care for a unilateral breast ultrasound is generally minimal, as the procedure is non-invasive and does not typically require recovery time. Patients may resume normal activities immediately following the ultrasound. However, it is important for the physician to discuss the results of the ultrasound with the patient, including any necessary follow-up actions or additional diagnostic procedures that may be indicated based on the findings. Patients should be advised to report any new symptoms or changes in their breast health to their healthcare provider promptly.

Short Descr ULTRASOUND BREAST COMPLETE
Medium Descr US BREAST UNI REAL TIME WITH IMAGE COMPLETE
Long Descr Ultrasound, breast, unilateral, real time with image documentation, including axilla when performed; complete
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) 0 - No payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 1 - 150% payment adjustment for bilateral procedures applies.
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 STV-Packaged Codes
ASC Payment Indicator Packaged service/item; no separate payment made.
Type of Service (TOS) 4 - Diagnostic Radiology
Berenson-Eggers TOS (BETOS) I3F - Echography/ultrasonography - other
MUE 1

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)
0857T Add On Code MPFS Status: Carrier Priced APC S Opto-acoustic imaging, breast, unilateral, including axilla when performed, real-time with image documentation, augmentative analysis and report (List separately in addition to code for primary procedure)
50 Bilateral procedure: unless otherwise identified in the listings, bilateral procedures that are performed at the same session, should be identified by adding modifier 50 to the appropriate 5 digit code. note: this modifier should not be appended to designated "add-on" codes (see appendix d).
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.
RT Right side (used to identify procedures performed on the right side of the body)
LT Left side (used to identify procedures performed on the left side of the body)
GA Waiver of liability statement issued as required by payer policy, individual case
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
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
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
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
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.
GZ Item or service expected to be denied as not reasonable and necessary
GC This service has been performed in part by a resident under the direction of a teaching physician
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
FY X-ray taken using computed radiography technology/cassette-based imaging
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.
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).
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.
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.)
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
AR Physician provider services in a physician scarcity area
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
BL Special acquisition of blood and blood products
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
FA Left hand, thumb
G3 Most recent urr reading of 65 to 69.9
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
KX Requirements specified in the medical policy have been met
MH Unknown if ordering professional consulted a clinical decision support mechanism for this service, related information was not provided to the furnishing professional or provider
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
T1 Left foot, second digit
TR School-based individualized education program (iep) services provided outside the public school district responsible for the student
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
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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2015-01-01 Added Added
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