C9766 HCPCS code: Revascularization, endovascular, open or percutaneous, lower extremity artery(ies), except tibial/peroneal; with intravascular lithotripsy and atherectomy, includes angioplasty within the same vessel(s), when performed

C9766 is the HCPCS Level II code for revascularization, endovascular, open or percutaneous, lower extremity artery(ies), except tibial/peroneal; with intravascular lithotripsy and atherectomy, includes angioplasty within the same vessel(s), when performed. In 2024 Medicare paid an average of $9,345.54 per service for C9766 across 97 services. Its Medicare coverage code is D (Special coverage instructions apply): Medicare covers it when its national or local coverage criteria are met. The NCCI unit limit is 2 per day on outpatient hospital claims. Medicare volume rose 304% from 2023 to 2024 (24 to 97 services). In 2024, about 18 clinicians billed Medicare for C9766 for 80 beneficiaries.

Code details

Who bills C9766 (2024)

Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.

Medicare utilization for C9766, 2023–2024

States with the most C9766 services (2024)

NCCI unit limits (MUE)

Medicare policy articles for this code

• A60247: Billing and Coding: Endovascular Management for Peripheral Arterial Disease of the Upper and Lower Extremities (Palmetto GBA (MAC - Part A, MAC - Part B))

Covered diagnoses (212 ICD-10-CM codes)

The diagnoses most often listed as covered in the policy articles above:

Showing 10 of 212. The full list, non-covered diagnoses and CSV export are in Caduvo.

What changed for C9766

• 2020-07-01: C9766 added to HCPCS Level II
• Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01

Frequently asked questions

What is HCPCS code C9766?

C9766 is the HCPCS Level II code for revascularization, endovascular, open or percutaneous, lower extremity artery(ies), except tibial/peroneal; with intravascular lithotripsy and atherectomy, includes angioplasty within the same vessel(s), when performed. Short descriptor: "Revasc intra lithotrip-ather".

How much does Medicare pay for C9766?

In 2024, the average Medicare payment was $9,345.54 per service (average allowed $11,732.08).

Does Medicare cover C9766?

Coverage code D — Special coverage instructions apply. Medicare covers it when its national or local coverage criteria are met.

Which diagnoses support coverage for C9766?

Medicare policy articles that cite C9766 list 212 covered ICD-10-CM diagnosis codes across 1 article. The most cited include I70.201 (Unspecified atherosclerosis of native arteries of extremities, right leg), I70.202 (Unspecified atherosclerosis of native arteries of extremities, left leg), I70.208 (Unspecified atherosclerosis of native arteries of extremities, other extremity). A listed diagnosis is necessary but not sufficient; the policy's other criteria still apply.

How many units of C9766 can be billed per day?

2 on outpatient hospital claims; 2 on practitioner claims (NCCI medically unlikely edits).

Related C97 codes

• C9724 — Endoscopic full-thickness plication of the stomach using endoscopic plication system (eps); includes endoscopy
• C9725 — Placement of endorectal intracavitary applicator for high intensity brachytherapy
• C9726 — Placement and removal (if performed) of applicator into breast for intraoperative radiation therapy, add-on to primary breast procedure
• C9727 — Insertion of implants into the soft palate; minimum of three implants
• C9728 — Placement of interstitial device(s) for radiation therapy/surgery guidance (e.g., fiducial markers, dosimeter), for other than the following sites (any approach): abdomen, pelvis, prostate, retroperitoneum, thorax, single or multiple
• C9733 — Non-ophthalmic fluorescent vascular angiography
• C9734 — Focused ultrasound ablation/therapeutic intervention, other than uterine leiomyomata, with magnetic resonance (mr) guidance
• C9735 — Anoscopy; with directed submucosal injection(s), any substance
• C9737 — Laparoscopy, surgical, esophageal sphincter augmentation with device (e.g., magnetic band)
• C9738 — Adjunctive blue light cystoscopy with fluorescent imaging agent (list separately in addition to code for primary procedure)
• C9739 — Cystourethroscopy, with insertion of transprostatic implant; 1 to 3 implants
• C9740 — Cystourethroscopy, with insertion of transprostatic implant; 4 or more implants

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Next steps

• Run a reimbursement report for a device billed under C9766
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Sources: CMS HCPCS Level II release October 2025; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.

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