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    v1.0.28
    OpenPayerBilling CodesOutpatient PPSHCPCS hcpcs-c1817-septal-defect-implant-system-intracardiac
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    HCPCS Level II C1817: Septal Defect Implant System, Intracardiac

    HCPCS Level II code C1817 describes a septal defect implant system, intracardiac used to close or occlude cardiac septal defects; the service is a device implant delivered via a cardiac catheterization or intracardiac surgical procedure and is typically performed in an operating room or cardiac catheterization lab as part of structural heart intervention.

    For related coverage guidance, see recent payer policy updates: Cardiac Computed Tomography (CCT)/Coronary Computed Tomographic Angiography (CCTA), Cardiovascular Disease Risk Assessment, Biomarkers for Myocardial Infarction and Chronic Heart Failure.

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is an adult or pediatric patient with a secundum atrial septal defect (ASD) or other intracardiac septal defect identified by echocardiography and cardiology evaluation. The patient presents with exertional dyspnea, recurrent respiratory infections in children, right heart enlargement on imaging, or paradoxical embolic events. After diagnostic workup including transthoracic and transesophageal echocardiography (often with bubble study) and cardiac catheterization as indicated, the interventional cardiology team schedules a transcatheter closure using a septal defect implant system (C1817).

    The clinical workflow includes pre-procedure evaluation (history, informed consent, review of antiplatelet/anticoagulant therapy), anesthesia planning (general anesthesia or monitored anesthesia care), vascular access (typically femoral venous), intracardiac imaging guidance (transesophageal or intracardiac echocardiography), catheter delivery of the implant, device deployment and confirmation of position and seal, post-deployment hemodynamic and imaging assessment, and recovery with post-procedure monitoring. Typical sites of service are the hospital catheterization laboratory, hybrid operating room, or an ambulatory surgical center with appropriate cardiovascular capabilities. Expected post-procedure care includes short inpatient observation for adults or overnight stay for pediatric patients, antiplatelet therapy per device labeling, and follow-up echocardiography to confirm device position and absence of residual shunt.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    93462Catheter placement in heart with echocardiographic imaging for guidance during percutaneous transcatheter closure of septal defectOften used when intracardiac or transesophageal echocardiography guides device placement during the transcatheter implant procedure.
    93580Transcatheter embolization, occlusion, or exclusion of intra-cardiac defects (septal)Descriptor for transcatheter occlusion procedures; used for reporting the closure procedure when applicable.
    93312Echocardiography, transesophageal, real-time with image documentation (2D)Used when intraoperative transesophageal echocardiography is performed for device positioning and assessment.
    33249Removal of implanted transcatheter septal closure deviceReported if device removal or revision is required after prior implantation.
    93510Diagnostic cardiac catheterization with right heart cath and pressure measurementsFrequently performed pre-implant or during the procedure to assess hemodynamics and shunt significance.

    Related Modifiers

    5 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…
    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…
    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…
    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…
    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…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    2084P0800XPsychiatry PhysicianA Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, …
    207T00000XNeurological Surgery PhysicianA neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and reh…
    363A00000XPhysician AssistantA physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and…
    208D00000XGeneral Practice PhysicianA physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
    103TP0814XPsychoanalysis PsychologistA psychologist whose specialty is distinguished from other specialties by its body of knowledge and its intensive treatment approaches. It aims at str…
    2471C1101XCardiovascular-Interventional Technology Radiologic TechnologistA radiologic technologist who specializes in cardiovascular interventional technology.
    363LA2100XAcute Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers · Nurse Practitioner
    347C00000XPrivate VehicleAn individual paid to provide non-emergency transportation using their privately owned/leased vehicle.

    Related ICD-10-CM Codes

    23 rows

    ICD-10-CM CodeDescription
    I05.0Rheumatic mitral stenosis
    I08.0Rheumatic disorders of both mitral and aortic valves
    I33.0Acute and subacute infective endocarditis
    I34.0Nonrheumatic mitral (valve) insufficiency
    I34.9Nonrheumatic mitral valve disorder, unspecified
    I35.0Nonrheumatic aortic (valve) stenosis
    I42.0Dilated cardiomyopathy
    I42.8Other cardiomyopathies
    I51.4Myocarditis, unspecified
    I97.810Intraoperative cerebrovascular infarction during cardiac surgery

    Showing 1–10 of 23

    Related Payer Policy Updates

    Specialty: Cardiology1 / 3

    10 rows

    PolicyPayerEffective Date
    Cardiac Computed Tomography (CCT)/Coronary Computed Tomographic Angiography (CCTA)univerahealthcare2026-10-15
    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
    Cardiovascular Disease Risk Assessmentblue cross blue shield - louisiana2026-09-15
    Cardiovascular Disease Risk AssessmentBlue Cross Blue Shield - New Mexico2026-09-04
    Computed Tomography to Detect Coronary Artery CalcificationBluecross Idaho2026-09-01
    Intracoronary Drug Delivery Balloon ProceduresBlue Cross Blue Shield - Rhode Island2026-09-01
    Cardiac Imaging Guidelinesevicore2026-09-01
    Percutaneous Left Atrial Appendage Closure Device for Stroke PreventionAmbetter Georgia2026-08-26

    Related Codes

    HCPCS-C1713-IMPLANTABLE-ANCHOR-SCREW-BONE-FIXATION

    HCPCS C1713: Anchor/Screw for Bone or Soft Tissue Fixation (Implantable)

    HCPCS-C1714-TRANSLUMINAL-DIRECTIONAL-ATHERECTOMY-CATHETER

    HCPCS C1714: Catheter, transluminal atherectomy, directional

    HCPCS-C1715-BRACHYTHERAPY-NEEDLE

    HCPCS C1715: Brachytherapy Needle

    HCPCS-C1716-BRACHYTHERAPY-GOLD-198-SOURCE

    HCPCS C1716: Brachytherapy Source, Gold-198, Per Source

    HCPCS-C1717-HDR-BRACHYTHERAPY-IRIDIUM-192-SOURCE

    HCPCS C1717: HDR Iridium-192 Brachytherapy Source, Per Source

    HCPCS-C1719-BRACHYTHERAPY-IRIDIUM-192-SOURCE-NON-STRANDED

    HCPCS C1719: Brachytherapy Source, Iridium-192, Non-Stranded

    HCPCS-C1721-IMPLANTABLE-DUAL-CHAMBER-CARDIOVERTER-DEFIBRILLATOR

    HCPCS C1721: Cardioverter-Defibrillator, Dual Chamber (Implantable)

    HCPCS-C1724-ROTATIONAL-TRANSLUMINAL-ATHERECTOMY-CATHETER

    HCPCS Level II C1724: Rotational Transluminal Atherectomy Catheter

    HCPCS-C1725-TRANSLUMINAL-ANGIOPLASTY-CATHETER-NON-LASER

    HCPCS Level II C1725: Transluminal Angioplasty Catheter, Non-Laser

    HCPCS-C1726-NON-VASCULAR-BALLOON-DILATATION-CATHETER

    HCPCS C1726: Catheter, Balloon Dilatation, Non-Vascular

    Showing 1–10 of 603

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    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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