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    v1.0.28
    OpenPayerBilling CodesCardiac Catheterization and Associated ProceduresCPT cpt-93464-exercise-hemodynamic-study-during-cardiac-catheterization
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    CPT 93464: Exercise Hemodynamic Assessment with Cardiac Catheterization

    Medicare pays $155 on average nationally for this procedure.

    CPT code 93464 describes an exercise hemodynamic assessment performed in association with cardiac catheterization, in which the provider induces physical stress and measures cardiac output, blood flow, intracardiac pressures, and oxygen levels before and after exercise to evaluate the heart’s functional response to exertion; service type: invasive hemodynamic monitoring with exercise provocation; typical site of service: cardiac catheterization laboratory or hospital cardiac catheterization suite.

    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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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 64-year-old patient with ischemic cardiomyopathy and exertional dyspnea is admitted for invasive hemodynamic assessment during cardiac catheterization. The interventional cardiology team performs baseline right and left heart catheterization measurements of pressures, cardiac output, mixed venous oxygen saturation, and intracardiac gradients. The patient then undergoes graded supine bicycle exercise while continuous hemodynamic monitoring is maintained to assess changes in cardiac output, pulmonary artery pressures, and left ventricular end-diastolic pressure with exertion. Serial blood gases and oxygen saturations are obtained before and after exercise. The procedure is documented by the attending interventional cardiologist, with nursing and perfusion (if used) support. Indications commonly include evaluation of exertional dyspnea of unclear etiology, suspected occult ischemia with normal coronary angiography, assessment of pulmonary hypertension with exercise, and determination of hemodynamic impact of valvular disease under stress. Typical site of service is a hospital cardiac catheterization laboratory or an ambulatory surgical center equipped for invasive hemodynamic monitoring. The service is billed in association with cardiac catheterization and reported when pharmacologic or physical exercise is performed and hemodynamic measurements are obtained before and after exercise to evaluate cardiac response to stress.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    93458Catheterization of coronary arteries including intraprocedural injection(s) for left heart catheterization, coronary angiography, and ventriculography when performed; with coronary angiography, with or without ventriculography, with right heart catheterization when performedOften performed immediately before or with exercise hemodynamic measurements as the diagnostic coronary angiogram and left heart catheterization component.
    93451Right heart catheterization including measurement(s) of oxygen saturation and cardiac output, when performed; diagnostic, with or without left heart catheterizationRight heart catheterization provides baseline and post-exercise pulmonary artery pressures and cardiac output; 93464 is reported in association when exercise is performed.
    93503Insertion and placement of flow-directed catheter (e.g., Swan-Ganz) for monitoring of pulmonary artery pressuresUsed when a pulmonary artery catheter is placed to obtain invasive hemodynamics before and after exercise.
    93015Cardiovascular stress test using maximal or submaximal treadmill or pharmacologic stress; supervision, interpretation and reportNoninvasive stress testing alternative; may be performed when invasive hemodynamics are not required.
    93701Hemodynamic monitoring for circulatory status, initial assessment; includes cardiac output measurementAncillary hemodynamic monitoring codes that may be used in complex cases where additional monitoring occurs during or after the exercise catheterization.

    Related Modifiers

    11 rows

    ModifierDescriptionWhen to Use
    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…
    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…
    73Modifier 73 indicates a facility-level outpatient hospital or ASC procedure that was discontinued after the patient was prepared and taken to the procedure/operating room but before any anesthesia…- When to use: Apply CPT modifier 73 on the FACILITY (outpatient hospital or ASC) claim when the patient has been fully prepared and physically taken into the procedure/operating room but the…
    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…
    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…
    55Modifier –55 indicates the billing provider furnished only postoperative management for a procedure that has a global surgical period. According to AAPC, this modifier is appended to the same CPT…- Use modifier -55 when billing the same CPT surgical code that has a 10- or 90-day global period and you, as a provider other than the original surgeon, furnished ONLY postoperative management (no…

    Showing 1–10 of 11

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    207RG0100XGastroenterology PhysicianAn internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This…
    207RH0002XHospice and Palliative Medicine (Internal Medicine) PhysicianAn internal medicine physician with special knowledge and skills to prevent and relieve the suffering experienced by patients with life-limiting illne…
    207RH0000XHematology (Internal Medicine) PhysicianAn internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, cl…
    152WX0102XOccupational Vision OptometristOptometrists who work in Occupational Vision, the branch of environmental optometry, consider all aspects of the relationship between work and vision,…
    2086S0129XVascular Surgery PhysicianA surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart.
    364SF0001XFamily Health Clinical Nurse SpecialistPhysician Assistants & Advanced Practice Nursing Providers · Clinical Nurse Specialist
    111NN1001XNutrition ChiropractorChiropractic Nutrition is that specialty within the chiropractic profession that deals with the overall factors that affect the patient's ability to m…
    174400000XSpecialistAn individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond…

    Related ICD-10-CM Codes

    28 rows

    ICD-10-CM CodeDescription
    E66.9Obesity, unspecified
    E78.5Hyperlipidemia, unspecified
    I20.0Unstable angina
    I20.1Angina pectoris with documented spasm
    I21.3ST elevation (STEMI) myocardial infarction of unspecified site
    I21.9Acute myocardial infarction, unspecified
    I24.9Acute ischemic heart disease, unspecified
    I25.10Atherosclerotic heart disease of native coronary artery without angina pectoris
    I25.110Atherosclerotic heart disease of native coronary artery with unstable angina pectoris
    I25.2Old myocardial infarction

    Showing 1–10 of 28

    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

    CPT-93451-PERCUTANEOUS-VENOUS-ACCESS-OXYGEN-SATURATION-CARDIAC-OUTPUT

    CPT 93451: Percutaneous Venous Access with Oxygen Saturation Measurement

    CPT-93452-LEFT-HEART-CATHETERIZATION-LEFT-VENTRICULAR-INJECTION-PRESSURE-MEASUREMENT

    CPT 93452: Left Heart Catheterization with LV Injection and Pressure Measurement

    CPT-93453-RIGHT-AND-LEFT-HEART-CATHETERIZATION

    CPT 93453: Right and Left Heart Catheterization, Diagnostic

    CPT-93454-CORONARY-ANGIOGRAPHY-IMAGING-SUPERVISION-INTERPRETATION

    CPT 93454: Coronary Angiography Imaging Supervision and Interpretation

    CPT-93455-IMAGING-SUPERVISION-INTERPRETATION-BYPASS-GRAFT-CATHETER-PLACEMENT

    CPT 93455: Imaging Supervision & Interpretation for Coronary Bypass Graft Catheter Placement

    CPT-93456-CORONARY-ANGIOGRAPHY-RIGHT-HEART-IMAGING-INTERPRETATION

    CPT 93456: Imaging Supervision and Interpretation for Coronary Angiography

    CPT-93457-IMAGING-SUPERVISION-INTERPRETATION-CORONARY-ANGIOGRAPHY

    CPT 93457: Coronary and Bypass Graft Angiography, Imaging Supervision

    CPT-93458-IMAGING-SUPERVISION-INTERPRETATION-LEFT-HEART-CATHETERIZATION

    CPT 93458: Imaging Supervision and Interpretation for Coronary Angiography

    CPT-93459-CORONARY-ANGIOGRAPHY-LEFT-HEART-CATHETERIZATION

    CPT 93459: Coronary Angiography with Left Heart Catheterization

    CPT-93460-CORONARY-ANGIOGRAPHY-LEFT-RIGHT-HEART-CATHETERIZATION

    CPT 93460: Diagnostic Coronary Angiography with Left and Right Heart Catheterization

    Showing 1–10 of 15

    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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