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    v1.0.30
    OpenPayerBilling CodesVenous Embolectomy/Thrombectomy, Direct or With CatheterCPT cpt-34490-upper-extremity-venous-thrombectomy-subclavian-axillary
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    CPT 34490: Upper-Extremity Thrombectomy, Subclavian/Axillary Vein

    Medicare pays $528 on average nationally for this procedure.

    CPT code 34490 describes a surgical thrombectomy of the upper extremity in which an incision is made in the arm and the provider advances to the subclavian or axillary vein to remove a venous clot, with or without use of a catheter; service type: surgical thrombectomy/vascular surgery; typical site of service: operating room or procedure suite, often within a hospital or ambulatory surgical center for vascular interventions.

    For related coverage guidance, see recent payer policy updates: Ambulance and Medical Transport Services (Ground, Air and Water) Corporate Medical Policy, Emergency Air/Water Ambulance Services Medical Guideline, Non-Emergent Ambulance Services.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is a middle-aged adult presenting to the hospital with acute swelling, pain, and erythema of the upper extremity after recent central venous catheter placement or a history of deep vein thrombosis. Imaging such as duplex ultrasound or venography confirms an occlusive thrombus of the axillary or subclavian vein. The vascular surgeon or interventional radiologist evaluates the patient and determines the need for open thrombectomy via an infraclavicular or transaxillary approach. The procedure involves a skin incision in the arm, dissection to the involved vein, direct removal of the clot with or without adjunctive catheter-directed techniques, hemostasis, and wound closure. Typical perioperative workflow includes preoperative consent, cross-sectional or duplex imaging review, perioperative antibiotics as indicated, anticoagulation management before and after the procedure, intraoperative vein exposure and thrombus extraction, potential adjunctive procedures (angioplasty or stent placement may follow if indicated), postoperative monitoring in a short-stay or inpatient setting, and discharge planning with anticoagulation instructions and follow-up vascular imaging.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    36465Endovenous therapy of incompetent vein, extremity, inclusive of all radiological supervision and interpretation; single treatment session (other than for saphenous vein)May be performed for adjunctive catheter-directed thrombolysis or ablation of associated venous insufficiency in the same limb.
    37211Transcatheter placement of a thrombolytic agent into peripheral vessel(s) (excluding dialysis circuit), including radiological supervision and interpretation; initial vesselUsed when catheter-directed thrombolysis is performed in conjunction with open thrombectomy or as an alternative approach.
    36010Introduction of needle or intracatheter, veinMay be used for central venous access placement prior to catheter-directed interventions.
    37220Revascularization, endovascular, open or percutaneous, including angioplastyUsed if concurrent angioplasty of a stenotic subclavian or axillary vein is performed after thrombectomy.
    34701Open treatment of arterio-venous fistula or graft complications (example code for related vascular access procedures)May be performed in cases where thrombosis involves dialysis access requiring surgical revision.

    Related Modifiers

    11 rows

    ModifierDescriptionWhen to Use
    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…
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
    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…
    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…
    66Modifier 66 (Surgical Team) is used when three or more surgeons act as primary surgeons on a single, highly complex procedure. The AMA defines it for use when a surgical team — often composed of…- Use modifier 66 when three or more surgeons act as primary surgeons working collaboratively as a surgical team on a single, highly complex or difficult procedure (for example organ…
    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…
    80CPT® Modifier 80 (Assistant Surgeon) is appended to a surgical CPT code when a physician (MD or DO) provides full, continuous assistance throughout the operative procedure. It is intended only for…- Use CPT Modifier -80 when a physician (MD or DO) serves as an assistant surgeon and provides full, continuous assistance throughout the entire operative procedure; append -80 to the surgical CPT…
    81Modifier -81 indicates a physician served as a minimal assistant surgeon for part—not all—of an operative procedure. Use when a physician’s assisting role is limited and does not represent full…- Use CPT modifier -81 when a physician acts as a minimum assistant surgeon who assists during only part (a limited portion) of an operative procedure; append -81 to the primary surgical CPT code to…

    Showing 1–10 of 11

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207K00000X
    207P00000X
    208100000X
    207L00000X
    363L00000X
    252Y00000X
    2084S0010X
    251300000X

    Related ICD-10-CM Codes

    25 rows

    ICD-10-CM CodeDescription
    I80.211Phlebitis and thrombophlebitis of right iliac vein
    I80.212Phlebitis and thrombophlebitis of left iliac vein
    I80.213Phlebitis and thrombophlebitis of iliac vein, bilateral
    I80.219Phlebitis and thrombophlebitis of unspecified iliac vein
    I82.401Acute embolism and thrombosis of unspecified deep veins of right lower extremity
    I82.402Acute embolism and thrombosis of unspecified deep veins of left lower extremity
    I82.403Acute embolism and thrombosis of unspecified deep veins of lower extremity, bilateral
    I82.409Acute embolism and thrombosis of unspecified deep veins of unspecified lower extremity
    I82.421Acute embolism and thrombosis of right iliac vein
    I82.422Acute embolism and thrombosis of left iliac vein

    Showing 1–10 of 25

    Related Payer Policy Updates

    Specialty: Emergency & Medical Transportation1 / 3

    10 rows

    PolicyPayerEffective Date
    Ambulance and Medical Transport Services (Ground, Air and Water) Corporate Medical Policybcbsvermont2026-10-01
    Emergency Air/Water Ambulance Services Medical GuidelineWPS Health Insurance2026-10-01
    Non-Emergent Ambulance ServicesConnectiCare2026-09-11
    Fixed Wing Air Ambulance TransportCigna2026-08-15
    Air AmbulanceAmbetter Georgia2026-08-01
    Ambulance Services (for New Mexico Only)UnitedHealthcare2026-08-01
    Ambulance Services (for Tennessee Only)UnitedHealthcare2026-08-01
    Clinical Policy: Air AmbulanceAmbetter Nevada2026-08-01
    Air AmbulanceCentene2026-08-01
    Clinical Policy: Air AmbulanceArizona Complete Health2026-08-01

    Related Codes

    CPT-34401-OPEN-VENOUS-THROMBECTOMY-VENA-CAVA-ILIAC-VEIN-REPAIR

    CPT 34401: Thromboembolectomy, Vena Cava or Iliac Vein, Open Abdominal Approach

    CPT-34421-THROMBECTOMY-VENA-CAVA-ILIAC-FEMOROPOPLITEAL

    CPT 34421: Thrombectomy of Vena Cava/Iliac/Femoropopliteal Vein

    CPT-34451-SURGICAL-VENOUS-THROMBECTOMY-OPEN-THROMBECTOMY

    CPT 34451: Open Thrombectomy of Vena Cava/Iliac/Femoropopliteal Vein

    CPT-34471-SUBCLAVIAN-VEIN-THROMBECTOMY-OPEN-REMOVAL-CLOT

    CPT 34471: Subclavian Vein Thrombectomy via Neck Incision

    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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