07130ZK
Bypass Lymphatic, Right Upper Extremity to Thoracic Duct with No Device, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 7 Lymphatic and Hemic Systems |
| Operation | 1 Bypass |
| Body Part | 3 Lymphatic, Right Upper Extremity |
| Approach | 0 Open |
| Device | Z No Device |
| Qualifier | K Thoracic Duct |
Operation Definition
Altering the route of passage of the contents of a tubular body part
Procedure Overview
Lymphatic bypass procedures reroute the flow of lymph fluid around a damaged, blocked, or missing segment of the lymphatic system, most often by surgically connecting a lymphatic vessel or node directly to a nearby vein. The best-known example is lymphaticovenous anastomosis (LVA), a microsurgical technique used to treat chronic lymphedema, the swelling that develops when lymph fluid cannot drain properly, commonly after cancer treatment that removed or irradiated lymph nodes.
By creating a new drainage pathway into the venous system, surgeons aim to reduce swelling, lower the risk of skin infections such as cellulitis, and improve limb mobility and comfort. These are delicate operations performed under high-powered microscopes because the vessels involved can be smaller than a millimeter in diameter.
Outcomes vary depending on how much lymphatic damage has already occurred, so patients are often evaluated with imaging beforehand to confirm the procedure is likely to help.
Anatomy & Axis Detail
Lymphatic, Right Upper Extremity
Lymphatic vessels and nodes of the right upper extremity drain the right arm and hand, funneling fluid through the axillary nodal basin before it enters the venous circulation near the right subclavian vein. Bypass procedures in this region are among the more established microsurgical treatments for upper limb lymphedema, particularly after axillary lymph node dissection or radiation for breast cancer, a well-recognized cause of chronic arm swelling. The bypass typically takes the form of a lymphaticovenous anastomosis, connecting a distal lymphatic channel directly to a small vein to restore drainage around the damaged axillary nodes. Because this procedure is frequently performed at multiple levels of the arm using supermicrosurgical technique, the operative report should specify the site of anastomosis to ensure the correct body part and approach are captured.
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.
Qualifier: Thoracic Duct
This qualifier designates the thoracic duct, the body's largest lymphatic vessel, which returns lymph from most of the body into the venous system near the left subclavian vein. It is used for procedures such as duct ligation or embolization performed to manage chylothorax, and it is distinguished from Cisterna Chyli, the duct's dilated abdominal origin.
Coding & Documentation
Coders assign a bypass code from this family when the operative note describes a new conduit created between a lymphatic structure and another body part, such as a vein, rather than simple repair or removal. The documentation must identify both the lymphatic site of origin and the specific body part the flow is now routed to, since PCS bypass values are built around that origin-to-destination relationship.
A frequent error is confusing lymphaticovenous anastomosis with a simple repair code when the surgeon's language is ambiguous; coders should look for explicit anastomosis or rerouting language rather than assuming intent. Another pitfall is missing the qualifier for the destination structure, which changes the code entirely.