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    OpenPayerBilling CodesOutpatient PPSHCPCS hcpcs-c9766-lower-extremity-revascularization-lithotripsy-atherectomy
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    HCPCS Level II C9766: Lower Extremity Revascularization with Lithotripsy and Atherectomy

    HCPCS Level II code C9766 describes revascularization of lower extremity artery(ies) (excluding tibial/peroneal) using intravascular lithotripsy combined with atherectomy, and includes angioplasty in the same vessel(s) when performed; this is an endovascular or percutaneous revascularization procedure typically performed in an interventional radiology, vascular surgery, or catheterization laboratory setting and involves device-based plaque modification and lumen restoration to improve arterial blood flow.

    For related coverage guidance, see recent payer policy updates: Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillation, Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillation, Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillation.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 72-year-old male with a history of peripheral arterial disease (PAD), diabetes mellitus, and progressive right calf claudication presents with worsening exertional leg pain and nonhealing forefoot ulceration. Noninvasive testing (ABI and arterial duplex) demonstrates significant inflow disease of the iliofemoral and femoropopliteal segments with focal, heavily calcified atherosclerotic lesions above the tibial/peroneal level. The vascular surgery/endovascular team schedules an endovascular revascularization procedure targeting the lower extremity artery(ies) above the tibial/distal segment. In the angiography suite under conscious sedation or general anesthesia, diagnostic angiography guides lesion crossing. Intravascular lithotripsy is used to fracture concentric calcified plaque, followed by atherectomy to debulk and modify lesion morphology, and adjunctive angioplasty (and/or stenting if indicated) is performed within the same treated vessel(s). The procedure may occur in an outpatient ambulatory surgical center or inpatient hospital operating room depending on clinical status, comorbidities, and payor requirements. Typical documentation includes pre-procedure indications, targeted vessel(s), lesion morphology, devices used (IVL catheter, atherectomy system, balloons/stents), intra-procedural angiographic results, anesthesia type, total contrast and fluoroscopy time, and post-procedure plan for antiplatelet therapy and wound care.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    36247Introduction of catheter, aorta, unilateral, for diagnostic angiography, radiological supervision and interpretationOften performed prior to lower extremity intervention for diagnostic aortography and runoff assessment
    37226Revascularization, endovascular, open or percutaneous, femoral/popliteal, single vessel; with atherectomy, including balloon angioplasty when performedCommonly reported for atherectomy procedures in femoropopliteal segments; complements intraprocedural atherectomy coding
    37227Revascularization, endovascular, open or percutaneous, femoral/popliteal, multiple vessels; with atherectomy, includes angioplasty when performedUsed when multiple target vessels in the femoropopliteal segment receive atherectomy
    75966Angiography, intra-procedural, radiological supervision and interpretation; image guidance for vessel (e.g., intravascular ultrasound)Supports intraprocedural imaging guidance such as IVUS used during complex endovascular procedures
    35476Thrombolysis, percutaneous, lower extremity, catheter directed, infusion (separate code when thrombus present)Occasionally performed before or after atherectomy/IVL when thrombotic burden is identified

    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…
    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…
    54Modifier ‑54 (“Surgical care only”) is appended to a CPT surgical procedure when the reporting surgeon performs the intraoperative (surgical) component but does not furnish the preoperative and/or…- Use modifier -54 when the reporting surgeon provided only the intraoperative (surgical) component of a procedure and preoperative and/or postoperative management has been or will be provided by…
    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…
    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…
    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…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207RC0000X
    207RH0000X
    208000000X
    367A00000X
    209800000X
    111N00000X
    261QM3000X
    2084P0015X

    Related ICD-10-CM Codes

    25 rows

    ICD-10-CM CodeDescription
    I70.213Atherosclerosis of native arteries of extremities with intermittent claudication, bilateral legs
    I70.222Atherosclerosis of native arteries of extremities with rest pain, left leg
    I70.231Atherosclerosis of native arteries of right leg with ulceration of thigh
    I70.241Atherosclerosis of native arteries of left leg with ulceration of thigh
    I70.261Atherosclerosis of native arteries of extremities with gangrene, right leg
    I70.301Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, right leg
    I70.321Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, right leg
    I70.331Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of thigh
    I70.332Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of calf
    I70.333Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of ankle

    Showing 1–10 of 25

    Related Payer Policy Updates

    Specialty: Cardiology1 / 3

    10 rows

    PolicyPayerEffective Date
    Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillationpremerabluecrossofwashington2027-02-05
    Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillationpremerabluecrossofwashington2027-02-05
    Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillationpremerabluecrossofwashington2027-02-05
    Percutaneous Left Atrial Appendage Closure - Medical PolicyHealth-New-England2027-02-01
    Transcatheter Mitral Valve Repair Medical PolicyHealth-New-England2027-02-01
    Cardiac Electrophysiological (EP) Studies and Cardiac Ablation of Abnormal Electrical RhythmsCigna2027-01-15
    Biomarkers for Myocardial Infarction and Chronic Heart Failure Reimbursement PolicyHealthfirst2026-11-01
    Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillationpremerabluecrossofwashington2026-11-01
    Percutaneous Left Atrial Appendage Closure Devices for Stroke Prevention in Atrial Fibrillationpremerabluecrossofwashington2026-11-01
    Cardiology - TryvioCigna2026-11-01

    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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