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    v1.0.28
    OpenPayerBilling CodesSurgical Procedures on the Aortic ValveCPT cpt-33411-aortic-valve-replacement-annulus-enlargement
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    CPT 33411: Aortic Annulus Enlargement During Aortic Valve Replacement

    Medicare pays $3129 on average nationally for this procedure.

    CPT code 33411 describes surgical aortic valve replacement with enlargement of the aortic annulus to permit insertion of a larger prosthetic valve; this cardiac surgical procedure addresses aortic valve stenosis or regurgitation and is performed in an operating room or cardiac surgery suite as an open-heart service under general anesthesia with cardiopulmonary bypass when indicated.

    For related coverage guidance, see recent payer policy updates: Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric or Substance Use Disorders, Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric or Substance Use Disorders, Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric or Substance Use Disorders.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is a 68-year-old male with symptomatic severe aortic stenosis presenting with exertional dyspnea, angina, and syncope. Diagnostic workup includes transthoracic echocardiography demonstrating a calcified, stenotic aortic valve with a mean gradient >40 mmHg and valve area <1.0 cm2, and coronary angiography ruling out prohibitive coronary disease. The patient is scheduled for surgical aortic valve replacement with annular enlargement to permit implantation of a larger prosthetic valve (CPT 33411). The clinical workflow begins with preoperative evaluation (history, physical, labs, cross-match, anesthesia assessment), perioperative transesophageal echocardiography to guide valve sizing and confirm function, cardiopulmonary bypass and aortic cross-clamping, performance of an aortic root/annular enlargement (such as Konno or Nicks-type enlargement) followed by insertion and securement of a mechanical or bioprosthetic valve, intraoperative assessment of valve competence, and postoperative intensive care monitoring for hemodynamics, bleeding, and arrhythmia management. Typical site of service is an inpatient operating room with postoperative care in a cardiac surgical intensive care unit. Service type is open surgical aortic valve replacement with annular enlargement for treatment of aortic valve stenosis or regurgitation.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    93451Hemodynamic monitoring during cardiac catheterization with interpretation and reportPreoperative invasive hemodynamic assessment in select patients undergoing surgical valve replacement.
    93503 is not provided in the inputData not available in the inputData not available in the input
    93355Intraoperative transesophageal echocardiography for monitoring and guidanceOften performed intraoperatively to assess valve anatomy, guide sizing, and confirm valve function after implantation.
    33405Replacement, aortic valve, with cardiopulmonary bypass, without prosthesis?33405 actually denotes aortic valve replacement with prosthesisCommon related code for aortic valve replacement without annular enlargement; used if annular enlargement is not performed.
    33533Coronary artery bypass, single vessel, with cardiopulmonary bypassPerformed concomitantly when significant coronary artery disease is present and requires bypass during the same operative session.
    99223Initial hospital care, high severityUsed for the initial postoperative inpatient evaluation and management of complex cardiac surgery patients.

    Related Modifiers

    11 rows

    ModifierDescriptionWhen to Use
    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…
    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…
    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…
    51Modifier –51 (Multiple Procedures) is used when the same provider performs multiple procedures in the same session to identify secondary, non‑exempt procedures and indicate payment reduction logic…- Use modifier -51 when the same provider performs multiple distinct procedures during the same patient encounter: report the highest‑valued procedure first (no modifier) and append -51 to…
    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…
    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…
    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…

    Showing 1–10 of 11

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    207QA0401XAddiction Medicine (Family Medicine) PhysicianA family medicine physician who specializes in the diagnosis and treatment of addictions.
    207RC0000XCardiovascular Disease PhysicianAn internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threaten…
    207L00000XAnesthesiology PhysicianAn anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an opera…
    3336M0002XMail Order PharmacyA pharmacy where pharmacists compound or dispense prescriptions or other medications in accordance with federal and state law, using common carriers t…
    3416L0300XLand AmbulanceTransportation Services · Ambulance
    124Q00000XDental HygienistAn individual who has completed an accredited dental hygiene education program, and an individual who has been licensed by a state board of dental exa…
    111NN0400XNeurology ChiropractorChiropractic Neurology is defined as the field of functional neurology that engages the internal - and external environment of the individual in a str…
    2085R0203XTherapeutic Radiology PhysicianTherapeutic Radiology certificate name was changed to Radiation Oncology. Use Radiation Oncology.

    Related ICD-10-CM Codes

    26 rows

    ICD-10-CM CodeDescription
    E11.9Type 2 diabetes mellitus without complications
    I06.0Rheumatic aortic stenosis
    I06.1Rheumatic aortic insufficiency
    I06.2Rheumatic aortic stenosis with insufficiency
    I08.0Rheumatic disorders of both mitral and aortic valves
    I08.2Rheumatic disorders of both aortic and tricuspid valves
    I21.3ST elevation (STEMI) myocardial infarction of unspecified site
    I25.10Atherosclerotic heart disease of native coronary artery without angina pectoris
    I34.0Nonrheumatic mitral (valve) insufficiency
    I34.1Nonrheumatic mitral (valve) prolapse

    Showing 1–10 of 26

    Related Payer Policy Updates

    Specialty: Anesthesiology1 / 3

    10 rows

    PolicyPayerEffective Date
    Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric or Substance Use DisordersPremera Bluecross2026-07-01
    Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric or Substance Use DisordersPremera Bluecross2026-07-01
    Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric or Substance Use DisordersPremera Bluecross2026-07-01
    Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric or Substance Use DisordersPremera Bluecross2026-07-01
    Elective Inpatient Services (for Idaho Only)UnitedHealthcare2026-06-01
    Sites of Servicepriority health2026-06-01
    Coverage for Ambulatory Surgery Unit (ASU)/Outpatient Facility and Anesthesia for Dental Servicesuniverahealthcare2026-05-21
    Mm_0579_Coveragepositioncriteria_Anesthesia_Services_Selected_Nerve_BlocksCigna2026-05-15
    Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric DisordersBlue Cross Blue Shield - North Carolina2026-04-01
    Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric DisordersBlue Cross Blue Shield - North Carolina2026-04-01

    Related Codes

    CPT-33361-TRANSCATHETER-AORTIC-VALVE-REPLACEMENT-FEMORAL

    CPT 33361: Transfemoral Transcatheter Aortic Valve Implantation (TAVR)

    CPT-33362-TRANSCATHETER-AORTIC-VALVE-REPLACEMENT-OPEN-FEMORAL-APPROACH

    CPT 33362: Transcatheter Aortic Valve Replacement, Open Femoral Artery Approach

    CPT-33363-TAVR-TAVI-OPEN-AXILLARY-ARTERY-APPROACH

    CPT 33363: Transcatheter Aortic Valve Replacement, Open Axillary Approach

    CPT-33364-TRANSCATHETER-AORTIC-VALVE-REPLACEMENT-ILIAC-ARTERY-APPROACH

    CPT 33364: Transcatheter Aortic Valve Replacement, Open Iliac Approach

    CPT-33365-TRANSAORTIC-TRANSCATHETER-AORTIC-VALVE-REPLACEMENT-TAVR

    CPT 33365: Transaortic Transcatheter Aortic Valve Replacement

    CPT-33366-TRANSAPICAL-TRANSCATHETER-AORTIC-VALVE-REPLACEMENT-TAVR-TAVI

    CPT 33366: Transapical Transcatheter Aortic Valve Replacement

    CPT-33367-CPB-DURING-TRANSCATHETER-AORTIC-VALVE-REPLACEMENT

    CPT 33367: Cardiopulmonary Bypass for Percutaneous Cannulation in TAVI/TAVR

    CPT-33368-CARDIOPULMONARY-BYPASS-DURING-TAVI-TAVR-OPEN-PERIPHERAL-CANNULATION

    CPT 33368: Cardiopulmonary Bypass for TAVI/TAVR with Open Peripheral Cannulation

    CPT-33369-CPB-CENTRAL-CANNULATION-DURING-TAVR

    CPT 33369: Cardiopulmonary Bypass for TAVI/TAVR with Central Cannulation

    CPT-33370-CEREBRAL-EMBOLIC-PROTECTION-TAVR

    CPT 33370: Cerebral Embolic Protection Placement During TAVR

    Showing 1–10 of 23

    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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