031C0A4
Bypass Radial Artery, Left to Lower Arm Artery, Left with Autologous Arterial Tissue, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 3 Upper Arteries |
| Operation | 1 Bypass |
| Body Part | C Radial Artery, Left |
| Approach | 0 Open |
| Device | A Autologous Arterial Tissue |
| Qualifier | 4 Lower Arm Artery, Left |
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
Radial Artery, Left
The left radial artery follows the same superficial course toward the wrist and is bypassed under comparable circumstances: occlusion from repeated arterial access, trauma, or focal atherosclerotic narrowing that jeopardizes hand perfusion when ulnar collateral supply is insufficient. Because this artery is frequently used as a donor conduit for coronary or other reconstructive bypass procedures elsewhere, surgeons operating on a diseased left radial artery must also consider its value as a future graft source and document accordingly. The vessel's small diameter generally necessitates microsurgical technique and a vein graft matched closely in caliber. Restoring flow at this level protects the thumb and index finger circulation supplied through the superficial and deep palmar arches, and the distal target of the reconstruction is what differentiates this procedure's body part value from more proximal forearm bypasses.
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: Lower Arm Artery, Left
This qualifier specifies the left lower arm artery as the site or destination of a procedure, distal to the elbow. It is distinguished from the right-sided qualifier by laterality and from the bilateral qualifier, which applies when both lower arm arteries are addressed in the same encounter.
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.