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    OpenPayerBilling CodesPercutaneous Transcatheter Septal Reduction TherapyCPT cpt-93585-azygos-hemiazygos-venous-imaging-during-heart-catheterization
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    CPT 93585: Azygos/Hemiazygos Venous Imaging During Congenital Heart Catheterization

    Medicare pays $47 on average nationally for this procedure.

    CPT code 93585 describes intraprocedural catheter-based imaging of the azygos/hemiazygos venous system performed during the same session as heart catheterization for one or more congenital cardiac defects; service type: diagnostic intravascular venography via catheter adjunct to congenital heart catheterization; typical site of service: inpatient or outpatient cardiac catheterization laboratory or procedural suite where congenital heart catheterization is performed.

    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 pediatric or adult patient with congenital cardiac anomalies is scheduled for a diagnostic or interventional heart catheterization. During the same anesthetized session, the interventional cardiologist performs transcatheter venography of the azygos/hemiazygos venous system using a catheter introduced via a central venous or femoral venous approach to define venous drainage, detect anomalous connections, or assess collateral pathways prior to device closure or surgical planning. Typical workflow: pre-procedure evaluation and consent; general anesthesia or monitored anesthesia care in a cardiac catheterization laboratory; vascular access obtained (femoral, jugular, or subclavian); diagnostic left/right heart catheterization and angiography as indicated; targeted catheter-directed venous injection and digital subtraction venography of the azygos/hemiazygos system; hemodynamic measurements and angiographic image acquisition; completion of any indicated congenital intervention (e.g., ASD/VSD device closure) or documentation of findings for surgical planning; post-procedure recovery in PACU with monitoring and discharge planning. Typical site of service: hospital-based cardiac catheterization laboratory or pediatric cardiac catheterization suite. Typical patient scenario: a child with suspected partial anomalous pulmonary venous return or complex congenital heart disease where delineation of azygos/hemiazygos venous anatomy is needed at the time of heart catheterization to guide interventional strategy.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    93451Right heart catheterization including measurement(s) of oxygen saturation and cardiac output, when performedOften performed immediately before or with azygos/hemiazygos venography for hemodynamic assessment
    93452Left heart catheterization including left ventriculography, when performedMay be performed in the same session if left-sided assessment is required
    93503Diagnostic catheterization or angiography of pulmonary arteriesCommonly performed alongside venous imaging when evaluating pulmonary venous anomalies
    93580Catheterization of the systemic venous structures for diagnostic purposes (other than azygos/hemiazygos)Related venography of other systemic venous structures during congenital catheterization sessions
    93585At the same session as heart catheterization for one or more congenital defects, the provider performs vein imaging using a catheter to assess the azygos/hemiazygos venous systemPrimary code describing targeted venography of the azygos/hemiazygos system during congenital heart catheterization

    Related Modifiers

    10 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…
    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…
    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…
    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…
    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…
    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…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    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…
    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…
    207RI0200XInfectious Disease PhysicianAn internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this…
    174400000XSpecialistAn individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond…
    261QB0400XBirthing Clinic/CenterA freestanding birth center is a health facility other than a hospital where childbirth is planned to occur away from the pregnant woman's residence, …
    125K00000XAdvanced Practice Dental TherapistAn Advanced Practice Dental Therapist is:<br/>(1) A dental therapist who has completed additional training beyond basic dental therapy education and p…
    2471C1106XCardiac-Interventional Technology Radiologic TechnologistA radiologic technologist who specializes in cardiac interventional and is appropriately educated and trained, consistent with nationally recognized s…
    261QH0700XHearing and Speech Clinic/CenterAn entity, facility, or distinct part of a facility providing diagnostic, treatment, prescriptive, and therapy services related to congenital and acqu…

    Related Payer Policy Updates

    Specialty: Cardiology1 / 2

    6 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

    Related Codes

    CPT-93583-CATHETER-BASED-SEPTAL-REDUCTION-CONTROLLED-INFARCTION

    CPT 93583: Catheter-Based Alcohol Septal Ablation

    CPT-93584-CATHETER-VENOUS-IMAGING-ANOMALOUS-SVC

    CPT 93584: Catheter Vein Imaging for Anomalous/Persistent SVC

    CPT-93588-VENOUS-IMAGING-DURING-CARDIAC-CATHETERIZATION-CONGENITAL-DEFECTS

    CPT 93588: Venovenous Collateral Imaging During Heart Catheterization

    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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