CPT 35536 Splenic-to-Renal Bypass Reimbursement | OpenPayer

Summary & Overview

CPT 35536: Splenic-to-Renal Artery Bypass with Vein Graft

CPT code 35536 represents an open vascular bypass graft procedure that connects the splenic artery to a segment of the renal artery using a vein graft to bypass an arterial blockage. Nationally, this code is significant for complex vascular surgery billing, resource utilization in tertiary care centers, and coverage determinations for procedures addressing renal ischemia when other revascularization options are unsuitable. Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

Readers will find an overview of clinical context and typical settings for the procedure, benchmarks for utilization and reimbursement where available, and policy considerations that affect coding and coverage for complex vascular reconstructions. The content summarizes how the service is categorized, where it is typically performed (inpatient operating rooms at hospitals or specialized surgical centers), and what operational and billing topics commonly arise for this service line. Data not available in the input is noted where applicable; the focus remains on clarifying the clinical intent of the code and the payer landscape relevant to national stakeholders.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare35536CPTvascular-surgeryrenal-revascularizationsplenic-artery-bypassopen-surgeryinpatient-surgery

Billing Code Overview

CPT code 35536 describes a surgical bypass procedure in which the provider creates a bypass graft connecting the splenic artery to a portion of the renal artery using a vein graft to circumvent a vascular obstruction. This procedure is performed to restore blood flow to the kidney when direct repair or endovascular approaches are not feasible.

Service type: Open vascular bypass grafting between splenic artery and renal artery
Typical site of service: Inpatient hospital operating room or specialized surgical suite for major vascular surgery

Clinical & Coding Specifications

Clinical Context

A typical patient is an adult with symptomatic renal artery ischemia due to atherosclerotic occlusive disease of the proximal renal artery not amenable to endovascular repair. The patient often presents with refractory hypertension, declining renal function, or recurrent renal ischemic pain. Diagnostic workup includes renal duplex ultrasound, CT angiography or MR angiography confirming a proximal renal artery occlusion and assessment of collateral circulation. Multidisciplinary review (vascular surgery, transplant surgery, or vascular interventional radiology) determines candidacy for open bypass.

The procedure involves harvesting an autologous vein graft (commonly the saphenous vein), mobilizing the splenic artery, and performing an arterial bypass anastomosis to a suitable portion of the renal artery to reestablish renal perfusion. The operative team includes a vascular surgeon (or transplant surgeon when applicable), an anesthesiologist, and perioperative nursing staff. Typical perioperative workflow includes preoperative optimization of blood pressure and renal function, informed consent discussing risks (bleeding, graft thrombosis, renal failure), intraoperative hemodynamic monitoring, and postoperative ICU or step-down monitoring for renal function, graft patency using duplex ultrasound, and wound care. Discharge planning includes antihypertensive management, antiplatelet therapy if indicated, and outpatient vascular follow-up with imaging at planned intervals.

Coding Specifications

Modifier	Description	When to Use
`11`

CPT 35516: Subclavian-to-Axillary Vein Bypass

CPT-35508-CAROTID-TO-VERTEBRAL-BYPASS-GRAFT

CPT 35508: Carotid-to-Vertebral Artery Bypass Graft

CPT-35511-SUBCLAVIAN-ARTERY-TO-SUBCLAVIAN-ARTERY-VEIN-BYPASS

CPT 35511: Subclavian-to-Subclavian Vein Bypass Graft

CPT-35510-CAROTID-TO-BRACHIAL-ARTERY-BYPASS-VEIN-GRAFT

CPT 35510: Carotid-to-Brachial Artery Bypass with Vein Graft

CPT-35537-AORTO-ILIAC-BYPASS-VEIN-GRAFT

CPT 35537: Aorto‑iliac Bypass with Vein Graft

CPT-35526-AORTO-SUBCLAVIAN-INNOMINATE-CAROTID-VEIN-BYPASS

CPT 35526: Aorto-Subclavian/Innominate/Carotid Vein Bypass

CPT-35570-TIBIAL-PERONEAL-ARTERY-BYPASS

CPT 35570: Tibial and Peroneal Artery Bypass Procedures

CPT-35560-RENAL-ARTERY-BYPASS-VEIN-GRAFT

CPT 35560: Aorta-to-Renal Artery Bypass Using Vein Graft

CPT-35531-AORTO-VISCERAL-VEIN-BYPASS-GRAFT

CPT 35531: Aorto-to-Celiac/Mesenteric Vein Bypass Graft

CPT-35512-SUBCLAVIAN-TO-BRACHIAL-ARTERY-VEIN-BYPASS

CPT 35512: Subclavian-to-Brachial Artery Vein Bypass

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Taxonomy Code	Specialty	Notes
2080S00000X	Vascular Surgery	Primary specialty performing open arterial bypass procedures.
207L00000X	Cardiac and Thoracic Surgery	Surgeons who may perform complex visceral arterial reconstructions in select centers.
208800000X	Transplant Surgery	May perform renal revascularization in context of complex renal artery disease or transplant-related vascular issues.
208D00000X	General Surgery	General surgeons with advanced vascular training may perform this procedure in some hospitals.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`I70.2`	Atherosclerosis of native arteries of the extremities (subcategory placeholder)	Atherosclerotic disease is the common pathophysiology leading to renal artery occlusion requiring bypass; use precise renal artery atherosclerosis codes when available.
`I70.9`	Generalized and unspecified atherosclerosis	Indicates systemic atherosclerotic disease contributing to renal artery occlusion and ischemia.
`I77.1`	Stricture of artery	Describes focal arterial stenosis or occlusion that may necessitate bypass when endovascular options fail.
`I12.0`	Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease	Chronic hypertension with renal disease is a common clinical consequence prompting revascularization to preserve renal function.
`I15.8`	Other secondary hypertension	Renovascular hypertension due to renal artery stenosis/occlusion is a primary indication for revascularization when secondary hypertension is identified.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`35476`	Bypass graft, with vein; femoral to popliteal, single segment (separate vein graft)	Example of an autologous vein bypass technique; demonstrates use of vein graft harvesting and anastomotic technique applicable to splenic–renal bypass.
`35631`	Aorto-renal bypass, with prosthetic graft	Alternative open revascularization option for renal artery disease when using prosthetic conduit rather than splenic artery inflow.
`36818`	Insertion of tunneled central venous catheter, open, for long-term infusion (e.g., for access when prolonged postoperative care or renal support is needed)	May be performed in patients requiring long-term vascular access perioperatively or for hemodialysis if renal function declines.
`93976`	Duplex scan of extremity arteries or arteriovenous graft with interpretation and report, limited or follow-up	Noninvasive postoperative surveillance for graft patency adapted to renal artery bypass; duplex renal artery evaluation codes may be used similarly.
`35800`	Revascularization, other vessels; with vein graft, for visceral or renal arteries (non-aortic inflow) — unlisted/complex vascular reconstructions	Related category for complex visceral/renal bypass procedures when specific code selection is required; used for coding similar complex reconstructions.

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