ICD-10-PCS Billable Code

031H0AY

Bypass Common Carotid Artery, Right to Upper Artery with Autologous Arterial Tissue, Open Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body System3 Upper Arteries
Operation1 Bypass
Body PartH Common Carotid Artery, Right
Approach0 Open
DeviceA Autologous Arterial Tissue
QualifierY Upper Artery

Operation Definition

Altering the route of passage of the contents of a tubular body part

Procedure Overview

Bypass procedures on the upper arteries reroute blood flow around a blocked or narrowed segment of an artery serving the head, neck, or upper extremities, using either a graft vessel or a rerouted native artery to reconnect blood supply beyond the obstruction. Common targets include the carotid, subclavian, axillary, and brachial arteries, where atherosclerotic disease can starve the brain, arm, or hand of adequate blood flow.

Surgeons perform these bypasses when angioplasty and stenting are unlikely to hold, when the blockage is too long or calcified for endovascular repair, or when a prior stent has failed. A graft, taken from the patient's own vein or a synthetic tube, is sewn in above and below the diseased segment so blood detours around it.

The goal is to protect against stroke, arm ischemia, or tissue loss by restoring adequate perfusion, and the operation is typically considered after imaging confirms the location and severity of the narrowing.

Anatomy & Axis Detail

Common Carotid Artery, Right

The right common carotid artery, the primary conduit carrying blood from the aortic arch region to the head and neck before splitting into internal and external branches, is bypassed for extensive occlusive disease, dissection, or as part of reconstruction after tumor resection or trauma involving the neck. Its location alongside the internal jugular vein and vagus nerve within the carotid sheath requires careful dissection to avoid injury to these structures during graft placement. Because interruption of flow here risks cerebral ischemia, bypass procedures at this level often involve temporary shunting to maintain perfusion during the anastomosis. Synthetic or vein conduits may originate from the aorta, subclavian, or innominate artery, and the graft's proximal source combined with the common carotid as the distal target defines the specific procedure documented.

Approach: Open

Open approach means the surgeon cuts through skin, mucous membrane, or other tissue layers to physically expose the target site to view before performing the procedure. It gives direct visualization and hands-on access, distinguishing it from Percutaneous approaches where instruments pass through a small puncture without exposing the site. Open is typical for procedures needing wide access, such as most laparotomies.

Device: Autologous Arterial Tissue

Autologous Arterial Tissue refers to an artery segment taken from the patient's own body, such as the internal mammary or radial artery, and repositioned as a graft within the same patient, typically for coronary revascularization. Its arterial wall structure gives it different handling and durability characteristics than the venous counterpart, and it is chosen over synthetic or donor tissue to minimize immune rejection.

Qualifier: Upper Artery

A generic qualifier for an artery located in the upper extremity - arm, forearm, or hand - used when the specific named vessel is not documented in enough detail for a more precise code. It contrasts with named qualifiers like axillary or brachial artery by its lack of specificity, and with venous qualifiers by describing arterial rather than venous anatomy. Coders default to it only after ruling out a more precise option.

Coding & Documentation

Assigning a bypass code from this family requires documentation of both the proximal and distal anatomic sites the graft connects, since ICD-10-PCS bypass coding is built around a 'from-to' body part convention rather than a single location. The operative report must also specify graft material (autologous vein, synthetic, or other) because the device value changes accordingly. A recurring mistake is coding only the diseased artery without capturing the second, distal qualifier that defines where the bypass terminates; another is confusing a bypass with an endarterectomy, which clears the vessel rather than routing around it.

Commonly Confused With

DilationUpper artery Dilation, meaning angioplasty or stent placement, is frequently mixed up with Bypass since both restore flow through a narrowed artery; the difference is whether the existing lumen is widened in place (Dilation) or an entirely new path is constructed around the lesion (Bypass).
ExtirpationExtirpation, used for thrombectomy or embolectomy, is also confused with Bypass when a clot is removed from the same vessel a graft was later placed on, but Extirpation removes matter from within an existing lumen without creating a new route.