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    v1.0.30
    OpenPayerBilling CodesUltrasonic Guidance ProceduresCPT cpt-76940-ultrasound-guidance-parenchymal-ablation-monitoring
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    CPT 76940: Ultrasound Guidance for Parenchymal Tissue Ablation

    Medicare pays $104 on average nationally for this procedure.

    CPT code 76940 describes ultrasound guidance used to locate parenchymal tissues and to monitor their ablation, representing an imaging guidance service provided during percutaneous or minimally invasive organ/tumor ablation procedures; typical service type is ultrasound guidance and monitoring, and the typical site of service is a hospital outpatient department, ambulatory surgical center, or interventional radiology suite where real-time ultrasound is used to guide and observe tissue ablation.

    For related coverage guidance, see recent payer policy updates: Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillation, Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillation, Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillation.

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    Clinical & Coding Specifications

    Clinical Context

    A 62-year-old patient with a solitary hepatic lesion suspicious for hepatocellular carcinoma is scheduled for percutaneous tumor ablation. The interventional radiology team uses real-time ultrasound guidance to localize the parenchymal lesion, guide probe placement into the organ tissue, and monitor the ablation zone during energy delivery. The workflow includes pre-procedure imaging review, informed consent, sterile preparation in an interventional suite or ambulatory surgical center, conscious sedation or general anesthesia as clinically indicated, ultrasound-guided probe insertion into the target parenchyma, continuous sonographic monitoring of ablation progress, post-ablation ultrasound to assess immediate results and complications, and documentation of guidance time and findings. Typical site of service is an interventional radiology suite, hospital operating room, or ambulatory surgery center. Service type is ultrasound guidance and monitoring of parenchymal tissue ablation, reported separately from the ablation procedure itself using 76940.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    32999Unlisted procedure, thoracic; used for atypical or novel thoracic ablationsMay be used when a specific ablation code for thoracic parenchymal tissue is not available; 76940 reports only the ultrasound guidance portion
    50592Percutaneous ablation, renal tumor, radiofrequency or cryoablation, percutaneous, including imaging guidanceRepresents the primary ablation procedure for renal parenchymal tumors; 76940 would be reported in addition to the ablation code if only ultrasound guidance is billed separately
    47382Laparoscopy, surgical, ablation of liver tumor(s), radiofrequency; may include imaging guidanceSurgical or percutaneous liver ablation codes are the primary service; 76940 documents the ultrasound guidance component when billed separately
    76937Ultrasound guidance for needle placement (eg, biopsy, aspiration, injection); imaging supervision and interpretationUsed for needle localization procedures; distinct from 76940 which is specific to guidance and monitoring of parenchymal tissue ablation
    76970Ultrasonic guidance for placement of radiologic markerRelated image-guided localization services that may occur in the same clinical encounter with 76940

    Related Modifiers

    9 rows

    ModifierDescriptionWhen to Use
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    50Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    56Modifier ‑56 indicates the reporting provider furnished only the preoperative management for a surgical procedure and did not perform the intraoperative or postoperative care. It is used in…- Use Modifier -56 when a provider performs only the preoperative management in a split‑care situation (one physician manages preop care while a different physician performs the intraoperative…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…
    73Modifier 73 indicates a facility-level outpatient hospital or ASC procedure that was discontinued after the patient was prepared and taken to the procedure/operating room but before any anesthesia…- When to use: Apply CPT modifier 73 on the FACILITY (outpatient hospital or ASC) claim when the patient has been fully prepared and physically taken into the procedure/operating room but the…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    2086S0122X
    363A00000X
    2084P0800X
    163WC2100X
    172M00000X
    163WN0800X
    207RI0008X
    122300000X

    Related Payer Policy Updates

    Specialty: Cardiology1 / 3

    10 rows

    PolicyPayerEffective Date
    Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillationpremerabluecrossofwashington2027-02-05
    Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillationpremerabluecrossofwashington2027-02-05
    Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillationpremerabluecrossofwashington2027-02-05
    Percutaneous Left Atrial Appendage Closure - Medical PolicyHealth-New-England2027-02-01
    Transcatheter Mitral Valve Repair Medical PolicyHealth-New-England2027-02-01
    Cardiac Electrophysiological (EP) Studies and Cardiac Ablation of Abnormal Electrical RhythmsCigna2027-01-15
    Biomarkers for Myocardial Infarction and Chronic Heart Failure Reimbursement PolicyHealthfirst2026-11-01
    Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillationpremerabluecrossofwashington2026-11-01
    Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillationpremerabluecrossofwashington2026-11-01
    Cardiology - TryvioCigna2026-11-01

    Related Codes

    CPT-76932-ULTRASOUND-GUIDANCE-ENDOMYOCARDIAL-BIOPSY-IMAGING-INTERPRETATION

    CPT 76932: Ultrasound-Guided Endomyocardial Biopsy Supervision and Interpretation

    CPT-76936-ULTRASOUND-GUIDED-PSEUDOANEURYSM-COMPRESSION-REPAIR

    CPT 76936: Ultrasound Guidance for Pseudoaneurysm/AV Fistula Compression

    CPT-76937-ULTRASOUND-GUIDANCE-VASCULAR-ACCESS

    CPT 76937: Ultrasound Guidance for Vascular Access

    CPT-76941-ULTRASOUND-GUIDANCE-INTRAUTERINE-FETAL-TRANSFUSION-CORDOCENTESIS

    CPT 76941: Imaging Supervision for Intrauterine Fetal Transfusion/Cordocentesis

    CPT-76942-ULTRASOUND-GUIDANCE-NEEDLE-PLACEMENT

    CPT 76942: Ultrasound Guidance for Needle Placement

    CPT-76945-ULTRASOUND-GUIDANCE-CHORIONIC-VILLUS-SAMPLING-SUPERVISION

    CPT 76945: Ultrasound Supervision and Interpretation for Chorionic Villus Sampling

    CPT-76946-ULTRASOUND-GUIDANCE-AMNIOCENTESIS-SUPERVISION-INTERPRETATION

    CPT 76946: Ultrasound Guidance for Amniocentesis Supervision/Interpretation

    CPT-76948-ULTRASOUND-SUPERVISION-INTERPRETATION-OVA-ASPIRATION

    CPT 76948: Ultrasound Guidance for Ovum Aspiration

    CPT-76965-ULTRASOUND-GUIDED-INTERSTITIAL-BRACHYTHERAPY-PLACEMENT

    CPT 76965: Ultrasound-Guided Interstitial Radioelement Placement

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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