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    v1.0.30
    OpenPayerBilling CodesIntracardiac Electrophysiological Procedures/StudiesCPT cpt-93656-pulmonary-vein-isolation-ep-study
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    CPT 93656: Comprehensive Electrophysiologic Study with Pulmonary Vein Isolation

    Medicare pays $808 and commercial payers pay $7078 on average nationally for this procedure.

    CPT code 93656 describes a comprehensive electrophysiologic study with pulmonary vein isolation in which the clinician places intracardiac wire electrodes, punctures the interatrial septum as needed, induces arrhythmia, records electrical activity, and delivers ablative energy to isolate pulmonary vein ostia for treatment of atrial fibrillation; service type: invasive cardiac electrophysiology procedure; typical site of service: cardiac catheterization laboratory or electrophysiology suite.

    For related coverage guidance, see recent payer policy updates: Dental Anesthesia Services, Anesthesia Services for Interventional Pain Management Procedures in an Adult, General Anesthesia and Conscious Sedation Services.

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    National Reimbursement Benchmarks

    Nationally, Medicare’s mean rate of $808.50 sits well below the BUCA average commercial mean of $7,077.90, indicating a substantial gap between public and average commercial compensation for CPT 93656. That difference of $6,269.40 highlights that commercial networks, as represented by BUCA, reimburse far higher on average than Medicare across localities. Median and tail values vary by commercial payer, but the headline contrast is clear: Medicare is a lower baseline compared with the BUCA commercial mean.

    Dispersion measured by the IQR (P75–P25) is narrowest for Aetna at $587.00 (P75 $1,430.60 minus P25 $834.30) and for Medicare at $67.00 (P75 $838 minus P25 $771), indicating relatively tight central ranges. The widest IQRs appear for Blue Cross Blue Shield at $12,622.80 (P75 $16,247.40 minus P25 $3,624.60) and BUCA at $7,618.60 (P75 $10,157.80 minus P25 $2,539.40), showing substantial variability in commercial contracting across those payers.

    National Payer Mean Reimbursement Rates

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    State Reimbursement Rates

    State: Alaska1 / 51

    Rate by payer

    Clinical & Coding Specifications

    Clinical Context

    A 68-year-old patient with symptomatic, drug-refractory atrial fibrillation presents for a planned comprehensive electrophysiologic study with pulmonary vein isolation. The patient has intermittent palpitations, exertional dyspnea, and episodes of rapid ventricular response despite rate- and rhythm-control medications. Pre-procedure evaluation includes transthoracic echocardiography to assess left atrial size and left ventricular function, review of anticoagulation management, and informed consent addressing transseptal puncture and ablation risks. On the day of service, the patient is brought to the cardiac catheterization/electrophysiology lab. Under monitored anesthesia care or general anesthesia, vascular access is obtained, intracardiac catheters are advanced, and transseptal puncture is performed to access the left atrium. Programmed stimulation is used to induce arrhythmia and locate triggers. Radiofrequency or cryoenergy is applied to achieve pulmonary vein isolation (PVI). Intracardiac mapping and hemodynamic monitoring occur throughout. Post-procedure, the patient is observed in a recovery area or an inpatient bed for vascular complications, tamponade surveillance, and anticoagulation resumption, with discharge typically the same day or after overnight observation depending on clinical course.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    93613Intracardiac electrophysiologic 3D mappingUsed to create a 3D map of the atria to guide catheter positioning and ablation during

    Related Modifiers

    11 rows

    ModifierDescriptionWhen to Use
    25CPT modifier 25 indicates that on the same day as another procedure or service, the same physician or other qualified health care professional provided a significant, separately identifiable…- When to apply: Use modifier 25 only on an E/M code to indicate the same provider delivered a significant, separately identifiable E/M service on the same day as another procedure or service — i.e.,…
    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…
    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…
    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…
    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…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    77Modifier 77 indicates that a previously performed procedure or service was legitimately repeated by a different physician or other qualified health care professional. The AMA’s CPT definition…- Use modifier 77 when a basic procedure or service already performed is repeated by a different physician or other qualified health care professional (for example, a second provider independently…
    79Modifier 79 indicates a surgical procedure performed during the postoperative global period of a prior surgery that is unrelated to the original procedure. Per AMA/CPT and CMS guidance, it is…- Use modifier 79 when the same physician (or same‑specialty physician in the same group) performs a surgical procedure during the postoperative global period of a prior surgery and the new procedure…

    Showing 1–10 of 11

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207RC0000X
    207RI0011X
    202C00000X
    261QB0400X
    2085R0205X
    261QP0904X
    1223D0001X
    103TS0200X

    Related ICD-10-CM Codes

    30 rows

    ICD-10-CM CodeDescription
    D50.9Iron deficiency anemia, unspecified
    E10.9Type 1 diabetes mellitus without complications
    E11.9Type 2 diabetes mellitus without complications
    E78.5Hyperlipidemia, unspecified
    I20.9Angina pectoris, unspecified
    I21.9Acute myocardial infarction, unspecified
    I25.10Atherosclerotic heart disease of native coronary artery without angina pectoris
    I34.0Nonrheumatic mitral (valve) insufficiency
    I34.1Nonrheumatic mitral (valve) prolapse
    I34.2Nonrheumatic mitral (valve) stenosis

    Showing 1–10 of 30

    Related Payer Policy Updates

    Specialty: Anesthesiology1 / 3

    10 rows

    PolicyPayerEffective Date
    Dental Anesthesia ServicesProvidence Health Plan2026-10-01
    Anesthesia Services for Interventional Pain Management Procedures in an AdultCigna2026-09-15
    General Anesthesia and Conscious Sedation ServicesUnitedHealthcare2026-09-01
    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
    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

    Related Codes

    CPT-93600-HIS-BUNDLE-ELECTROGRAM-RECORDING

    CPT 93600: Electrogram Recording of Bundle of His

    CPT-93602-INTRACARDIAC-ATRIAL-ELECTROGRAM-RECORDING

    CPT 93602: Intracardiac Atrial Electrogram Recording

    CPT-93603-INTRACARDIAC-ELECTROGRAM-RECORDING-VENTRICLE

    CPT 93603: Intracardiac Electrogram Recording from Ventricular Chamber

    CPT-93609-ELECTROPHYSIOLOGY-MAPPING-INDUCED-ARRHYTHMIA

    CPT 93609: Electrophysiology Study with Arrhythmia Induction and Mapping

    CPT-93610-ATRIAL-PACING-ELECTROPHYSIOLOGY-EVALUATION

    CPT 93610: Atrial Pacing for Electrophysiology Evaluation

    CPT-93612-VENTRICULAR-PACING-DIAGNOSTIC

    CPT 93612: Ventricular Pacing During Electrophysiology Study

    CPT-93613-ELECTROANATOMIC-MAPPING-WITH-ARRHYTHMIA-INDUCTION

    CPT 93613: Electroanatomic Mapping for Arrhythmia Localization

    CPT-93615-ESOPHAGEAL-ELECTROGRAM-ELECTRODE-PLACEMENT

    CPT 93615: Esophageal Electrogram Recording of Atria

    CPT-93616-ESOPHAGEAL-ELECTROGRAM-PACING-ELECTRODE

    CPT 93616: Esophageal Atrial Pacing and Electrogram Recording

    CPT-93618-CATHETER-INSERTION-TO-INDUCE-ARRHYTHMIA

    CPT 93618: Catheter Insertion to Induce Arrhythmia

    Showing 1–10 of 28

    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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    93656
    93621Comprehensive electrophysiologic evaluation with left atrial pacing and recordingMay be performed as part of the diagnostic evaluation during the same session when left atrial pacing/recording is required
    93622Comprehensive electrophysiologic evaluation with left ventricular pacing and recordingPerformed when left ventricular pacing/recording is clinically indicated in the EP study workflow
    93623Programmed stimulation and pacing after intravenous drug infusionUsed when drug-provoked stimulation or post-drug testing is required during the EP study associated with 93656
    93657Additional atrial fibrillation ablation after pulmonary vein isolationReported for additional ablation procedures beyond initial PVI when further lesion sets are created in the same or subsequent session