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    v1.0.30
    OpenPayerBilling CodesBypass Graft Procedures Other Than VeinCPT cpt-35612-subclavian-artery-bypass-synthetic-graft
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    CPT 35612: Subclavian Artery Bypass with Synthetic Graft

    Medicare pays $952 on average nationally for this procedure.

    CPT code 35612 describes a surgical bypass of a subclavian artery occlusion using a synthetic graft, a vascular surgery procedure typically performed in an operating room or vascular surgery suite to restore blood flow to the upper extremity; the service involves prosthetic conduit placement to bypass the blocked segment of the subclavian artery and is billed as a major arterial bypass procedure.

    For related coverage guidance, see recent payer policy updates: Surgical Procedures, Outpatient Surgical Procedures - Site of Service, Site of Service Ambulatory Service Center (ASC) Select — Surgical or Diagnostic Procedures in Adults.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is a 68-year-old smoker with peripheral vascular disease and symptomatic left upper extremity ischemia due to severe subclavian artery atherosclerotic occlusive disease. The patient presents with arm claudication, decreased brachial pulse, and blood pressure discrepancy between arms. Noninvasive testing (duplex ultrasound and CT angiography) demonstrates a high-grade proximal subclavian artery stenosis or occlusion not amenable to percutaneous transluminal angioplasty. The vascular surgery team schedules an open extra-anatomic bypass using a synthetic graft to revascularize the subclavian artery.

    Preoperative workflow includes focused history and physical, cardiac risk assessment, medication reconciliation (antiplatelet and anticoagulation planning), and vascular imaging review. In the operating room under general anesthesia, the surgeon exposes the inflow and outflow vessels, sizes and places a synthetic prosthetic graft (e.g., PTFE) to bypass the diseased segment, performs graft anastomoses, confirms graft patency (intraoperative Doppler/angiography), and closes. Postoperative care includes monitoring perfusion of the limb, pain control, wound care, imaging as indicated, and coordinated discharge planning with antiplatelet therapy and vascular risk modification counseling.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    36247Introduction of catheter, arterial system; percutaneous, including diagnostic angiography and radiological supervision and interpretation when performedOften performed preoperatively or intraoperatively for diagnostic angiography or to assist with localization and planning.
    35907Endarterectomy, carotid or other cervical artery, with or without patch graftAlternative or adjunct procedure when concurrent cervical arterial disease is addressed.
    34701Peripheral arterial bypass, from axillary to brachial artery, with vein or prosthetic graftRelated extra-anatomic bypass codes; used when inflow/outflow differ and specific anatomic bypass is performed.
    76536Duplex scan of extremity arteries or veins; complete bilateral studyNoninvasive vascular testing commonly used pre- and postoperatively to assess graft patency.
    93975Duplex scan of extremity arteries, follow-up arterial studyPostoperative surveillance of bypass graft perfusion and flow.

    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…
    23Modifier -23 (Unusual Anesthesia) is used on anesthesia service CPT codes when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia…- Use modifier -23 only on anesthesia CPT codes (00100–01999) when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia because of…
    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…
    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…
    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…

    Showing 1–10 of 11

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207VG0400X
    208200000X
    2080P0006X
    207RH0000X
    1223S0112X
    332000000X
    174N00000X
    281P00000X

    Related Payer Policy Updates

    Specialty: General Surgery1 / 2

    10 rows

    PolicyPayerEffective Date
    Surgical ProceduresUnitedHealthcare2026-09-01
    Outpatient Surgical Procedures - Site of ServiceUnitedHealthcare2026-09-01
    Site of Service Ambulatory Service Center (ASC) Select — Surgical or Diagnostic Procedures in AdultsPremera Bluecross2026-09-01
    Site of Service Ambulatory Surgical Center (ASC) Select — Surgical or Diagnostic Procedures in AdultsPremera Bluecross2026-09-01
    Site of Service Ambulatory Service Center (ASC) SelectPremera Bluecross2026-09-01
    Site of Service Ambulatory Surgical Center (ASC) Select — Site of Service for Ambulatory Surgical Procedures (ASC Select)Premera Bluecross2026-09-01
    Site of Service Ambulatory Service Center (ASC) SelectPremera Bluecross2026-09-01
    Outpatient Surgical Procedures - Site of Servicesierra health and life2026-08-01
    Medical Necessity Guidelines — Inpatient Surgical CareMass General Brigham Health Plan2026-08-01
    Ambulatory Surgery Center (ASC) - Site of Care PolicyKaiser Permanente2026-08-01

    Related Codes

    CPT-35600-ARTERIAL-GRAFT-HARVEST-ARM-FOR-CORONARY-BYPASS

    CPT 35600: Arm Artery Harvest for Coronary Bypass

    CPT-35601-CAROTID-COMMON-ARTERY-BYPASS-SYNTHETIC-GRAFT

    CPT 35601: Common Carotid Artery Bypass with Synthetic Graft

    CPT-35602-CAROTID-TO-CAROTID-PROSTHETIC-ARTERIAL-BYPASS

    CPT 35602: Carotid-to-Carotid Bypass with Prosthetic Graft

    CPT-35606-SUBCLAVIAN-ARTERY-BYPASS-SYNTHETIC-GRAFT

    CPT 35606: Subclavian Artery Bypass with Synthetic Graft

    CPT-35616-SUBCLAVIAN-TO-AXILLARY-BYPASS-SYNTHETIC-GRAFT

    CPT 35616: Subclavian to Axillary Bypass with Synthetic Graft

    CPT-35621-AXILLOFEMORAL-BYPASS-SYNTHETIC-GRAFT

    CPT 35621: Axillary–Femoral Bypass with Synthetic Graft

    CPT-35623-AXILLARY-TO-POPLITEAL-OR-TIBIAL-BYPASS-SYNTHETIC-GRAFT

    CPT 35623: Axillofemoral to Popliteal/Tibial Bypass with Synthetic Graft

    CPT-35626-AORTIC-TO-SUBCLAVIAN-INNOMINATE-CAROTID-BYPASS-GRAFT

    CPT 35626: Aortic-to-Subclavian/Innominate/Carotid Bypass with Synthetic Graft

    CPT-35631-AORTO-VISCERAL-RENAL-BYPASS-SYNTHETIC-GRAFT

    CPT 35631: Aorto-Visceral Bypass with Synthetic Graft

    CPT-35632-ILIAC-TO-CELIAC-SYNTHETIC-GRAFT-BYPASS

    CPT 35632: Iliac-to-Celiac Arterial Bypass with Synthetic Graft

    Showing 1–10 of 27

    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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