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    v1.0.30
    OpenPayerBilling CodesVein Bypass Graft ProceduresCPT cpt-35512-subclavian-to-brachial-artery-vein-bypass
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    CPT 35512: Subclavian-to-Brachial Artery Bypass with Vein Graft

    Medicare pays $1095 on average nationally for this procedure.

    CPT code 35512 describes surgical creation of a bypass graft that connects the subclavian artery to a portion of the brachial artery using a vein graft to bypass an arterial occlusion; this is a vascular surgery procedure performed as an open surgical bypass (arterial revascularization) typically in an operating room or vascular surgery suite and is categorized as a vascular/arterial bypass service.

    For related coverage guidance, see recent payer policy updates: Automated Ambulatory Blood Pressure Monitoring for Diagnosis of Hypertension in Patients with Elevated Office Blood Pressure, Cardiology - Ivabradine, Cardiac Computed Tomography (CCT)/Coronary Computed Tomographic Angiography (CCTA).

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 68-year-old male with a history of peripheral arterial disease and progressive ischemic symptoms of the right upper extremity presents with rest pain, digital ischemia, and nonhealing fingertip ulcers despite optimal medical therapy and endovascular attempts. Diagnostic imaging (duplex ultrasound and angiography) demonstrates a high-grade occlusive lesion of the right subclavian artery proximal to the vertebral takeoff with inadequate inflow to the brachial artery. The vascular surgery team decides to perform an open extra-anatomic bypass: creation of a subclavian-to-brachial artery bypass using an autologous vein graft to restore distal perfusion.

    Preoperative workflow includes cardiopulmonary assessment, informed consent documenting the bypass and graft source, and marking of the vein harvest site. Intraoperative steps include exposure of the subclavian artery, harvest and preparation of the vein graft (typically ipsilateral or contralateral greater saphenous or upper extremity vein), tunneling of the graft to the brachial artery, proximal and distal anastomoses, hemostasis, and assessment of flow (palpable pulses, Doppler signals). Postoperative management includes monitoring for graft patency, anticoagulation or antiplatelet therapy per institutional protocol, wound care, and surveillance duplex imaging during follow-up.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    35512Bypass graft, with vein; subclavian to brachialPrimary procedure restoring arterial inflow to the upper extremity by vein graft (subject code).
    35631Bypass graft, venae comitantes or other, upper extremity; brachial to radial or ulnar arteryPerformed when distal bypass extension or additional distal revascularization is required.
    35600Thrombectomy or embolectomy, with or without arteriotomy; upper extremityPerformed if intraoperative thrombosis or embolus requires removal to salvage graft or native artery.
    36147Introduction of catheter into artery, other than central (e.g., diagnostic angiography of limb)Preoperative or intraoperative angiography or access procedures for localization and planning.
    37799Unlisted procedure, vascular surgeryUsed for unusual or adjunct vascular procedures not described by specific CPT codes during the same operative session.
    93925Duplex scan of upper extremity arterial/venous mapping and postoperative surveillanceUsed preoperatively for mapping vessels or postoperatively to assess graft patency.

    Related Modifiers

    11 rows

    ModifierDescriptionWhen to Use
    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…
    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…
    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…
    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…
    82Modifier 82 is appended to a surgical CPT code to indicate that an attending physician acted as an assistant because a qualified resident surgeon was unavailable. In teaching hospitals it documents…- When to use: Append modifier 82 in teaching-hospital settings to indicate a physician served as an assistant surgeon because a qualified resident surgeon was unavailable (includes situations where…
    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…

    Showing 1–10 of 11

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207L00000X
    207P00000X
    2080P0207X
    213EP1101X
    2251H1300X
    133VN1501X
    207PT0002X
    2085P0229X

    Related ICD-10-CM Codes

    24 rows

    ICD-10-CM CodeDescription
    I65.21Occlusion and stenosis of right carotid artery
    I65.22Occlusion and stenosis of left carotid artery
    I70.219Atherosclerosis of native arteries of extremities with intermittent claudication, unspecified extremity
    I70.221Atherosclerosis of native arteries of extremities with rest pain, right leg
    I70.231Atherosclerosis of native arteries of right leg with ulceration of thigh
    I70.235Atherosclerosis of native arteries of right leg with ulceration of other part of foot
    I70.238Atherosclerosis of native arteries of right leg with ulceration of other part of lower leg
    I70.342Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of calf
    I70.412Atherosclerosis of autologous vein bypass graft(s) of the extremities with intermittent claudication, left leg
    I70.413Atherosclerosis of autologous vein bypass graft(s) of the extremities with intermittent claudication, bilateral legs

    Showing 1–10 of 24

    Related Payer Policy Updates

    Specialty: Cardiology1 / 2

    10 rows

    PolicyPayerEffective Date
    Automated Ambulatory Blood Pressure Monitoring for Diagnosis of Hypertension in Patients with Elevated Office Blood PressureBluecross Idaho2026-11-01
    Cardiology - IvabradineCigna2026-10-15
    Cardiac Computed Tomography (CCT)/Coronary Computed Tomographic Angiography (CCTA)univerahealthcare2026-10-15
    Percutaneous Ventricular Assist DeviceUnitedHealthcare2026-10-01
    Cardiovascular Disease Risk AssessmentOscar Health2026-10-01
    Biomarkers for Myocardial Infarction and Chronic Heart FailureOscar Health2026-10-01
    Multiple Procedure Payment Reduction for Diagnostic Cardiovascular ProceduresBlue Cross Blue Shield - Maine2026-10-01
    Left Atrial Appendage Closure Devicesexcellus_health_plan_inc2026-09-17
    Left Atrial Appendage Closure Devicesuniverahealthcare2026-09-17
    Cardiac Omnibus CodesCigna2026-09-15

    Related Codes

    CPT-35500-ARM-VEIN-HARVEST-FOR-BYPASS-CONDUIT

    CPT 35500: Upper Extremity Vein Harvest for Bypass Conduit

    CPT-35501-CAROTID-COMMON-TO-INTERNAL-ARTERY-BYPASS-GRAFT

    CPT 35501: Carotid Bypass, Common to Internal Carotid Artery

    CPT-35506-CAROTID-TO-SUBCLAVIAN-BYPASS-GRAFT

    CPT 35506: Carotid to Subclavian Bypass Graft

    CPT-35508-CAROTID-TO-VERTEBRAL-BYPASS-GRAFT

    CPT 35508: Carotid-to-Vertebral Artery Bypass Graft

    CPT-35509-CAROTID-TO-CAROTID-VEIN-BYPASS-GRAFT

    CPT 35509: Carotid-to-Carotid Vein Bypass Graft

    CPT-35510-CAROTID-TO-BRACHIAL-ARTERY-BYPASS-VEIN-GRAFT

    CPT 35510: Carotid-to-Brachial Vein Bypass Graft

    CPT-35511-SUBCLAVIAN-ARTERY-TO-SUBCLAVIAN-ARTERY-VEIN-BYPASS

    CPT 35511: Subclavian-to-Subclavian Vein Bypass Graft

    CPT-35515-SUBCLAVIAN-TO-VERTEBRAL-ARTERY-BYPASS-VEIN-GRAFT

    CPT 35515: Subclavian to Vertebral Artery Bypass with Vein Graft

    CPT-35516-SUBCLAVIAN-TO-AXILLARY-VEIN-BYPASS

    CPT 35516: Subclavian to Axillary Vein Bypass Graft

    CPT-35518-AXILLARY-ARTERY-TO-AXILLARY-ARTERY-BYPASS-VEIN-GRAFT

    CPT 35518: Axillary-to-Axillary Artery Bypass with Vein Graft

    Showing 1–10 of 32

    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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