021349F
Bypass Coronary Artery, Four or More Arteries to Abdominal Artery with Autologous Venous Tissue, Percutaneous Endoscopic Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 2 Heart and Great Vessels |
| Operation | 1 Bypass |
| Body Part | 3 Coronary Artery, Four or More Arteries |
| Approach | 4 Percutaneous Endoscopic |
| Device | 9 Autologous Venous Tissue |
| Qualifier | F Abdominal Artery |
Operation Definition
Altering the route of passage of the contents of a tubular body part
Procedure Overview
Bypass procedures on the heart and great vessels reroute blood around a blocked or narrowed segment of a coronary artery or great vessel, restoring blood flow to tissue that would otherwise be starved of oxygen. Coronary artery bypass grafting is the best-known example, where a segment of the patient's own vein or artery, or a synthetic conduit, is connected from the aorta to a point on a coronary artery past a blockage, giving blood a new path around diseased, narrowed vessel. These procedures are performed for significant coronary artery disease or great vessel obstruction that cannot be adequately managed with medication or a less invasive approach like angioplasty.
Bypass is distinct in ICD-10-PCS because the coded body part is the vessel supplying blood (the origin of the bypass) and the qualifier identifies the vessel or structure the flow is being routed to, rather than the blockage itself being treated. The number of vessels bypassed and the conduit material both matter clinically and for coding, since a triple bypass using a mix of arterial and venous grafts is captured as separate codes for each distinct bypass performed.
Anatomy & Axis Detail
Coronary Artery, Four or More Arteries
A four-or-more-artery bypass addresses diffuse coronary artery disease spanning most of the heart's major supply routes, typically the left anterior descending, diagonal, circumflex or obtuse marginal, and right coronary arteries. This extent of disease usually results from long-standing atherosclerosis and often prompts a heart team decision favoring surgery over percutaneous intervention because stenting cannot durably cover so many separate lesions. The operation extends cardiopulmonary bypass time and typically combines an internal mammary artery graft with multiple saphenous vein or radial artery segments, each routed from an origin such as the aorta to a distinct coronary target past its occlusion. Because coding tracks the number of distinct sites bypassed rather than the number of conduits used, four or more separate coronary destinations must be documented, along with the origin and material for each graft, since mixed autologous and nonautologous conduits are coded as separate procedures.
Approach: Percutaneous Endoscopic
Percutaneous Endoscopic combines a puncture through skin or mucous membrane with insertion of an endoscope to visualize the procedure internally, as in laparoscopic cholecystectomy. It is distinguished from plain Percutaneous by the presence of scope-guided visualization, and from Via Natural or Artificial Opening Endoscopic by its route being a new puncture rather than an existing orifice or stoma.
Device: Autologous Venous Tissue
Autologous Venous Tissue describes a vein harvested from the patient's own body, commonly the saphenous vein, and used as a graft or conduit elsewhere in the same patient, as in coronary or peripheral bypass. Being autologous, it avoids rejection risk associated with donor or synthetic material, and it is distinguished from Autologous Arterial Tissue by originating from venous rather than arterial vasculature.
Qualifier: Abdominal Artery
This qualifier indicates that a segment of abdominal artery, such as the gastroepiploic artery, serves as the bypass conduit or destination in a heart or great vessel procedure, an alternative less commonly used than mammary or venous grafts. It is distinguished from Thoracic Artery by anatomic location and from Aorta, which denotes the graft's origin rather than a discrete arterial conduit.
Coding & Documentation
Coders need the operative note to state, for each individual bypass, the proximal origin of the graft, the distal target vessel, and the type of conduit used - internal mammary artery, saphenous vein, radial artery, or synthetic graft - since each of these determines a distinct body part, qualifier, and device value. A common mistake is coding all grafts in a multi-vessel bypass under one code rather than one code per distinct vessel bypassed, since PCS requires each bypass with a different body part or qualifier combination to be reported separately. Documentation should also make clear whether the procedure was done via open sternotomy or a minimally invasive approach, since the approach value changes accordingly, and confirm whether cardiopulmonary bypass (extracorporeal circulation) was used, which is captured with a separate code for the perfusion service itself.