04UN0JZ
Supplement Popliteal Artery, Left to No Qualifier with Synthetic Substitute, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 4 Lower Arteries |
| Operation | U Supplement |
| Body Part | N Popliteal Artery, Left |
| Approach | 0 Open |
| Device | J Synthetic Substitute |
| Qualifier | Z No Qualifier |
Operation Definition
Putting in or on biological or synthetic material that physically reinforces and/or augments the function of a portion of a body part
Procedure Overview
Supplement procedures reinforce or augment an artery using additional biological or synthetic material without removing the native vessel segment, distinguishing them from Replacement, where the diseased tissue is excised. In the lower arteries this typically takes the form of patch angioplasty at an endarterectomy site, or endovascular placement of a covered stent graft that lines and reinforces a weakened or aneurysmal segment while the native artery remains in place.
Patients undergo this type of procedure when an artery has been narrowed by plaque removal and needs a widening patch to prevent restenosis, or when an aneurysm needs endoluminal reinforcement rather than open resection. It is common in both open vascular surgery and increasingly in endovascular aneurysm repair, where covered stent grafts are deployed to reinforce the arterial wall from within.
Anatomy & Axis Detail
Popliteal Artery, Left
The left popliteal artery lies deep within the popliteal fossa behind the left knee, continuing the femoral artery's supply toward the leg before dividing into the anterior tibial artery and tibioperoneal trunk. Supplement procedures reinforce a wall segment compromised by aneurysmal dilation, a common finding in this location, or by thinning after prior endovascular treatment, using patch material to restore structural integrity and maintain adequate luminal diameter. Given the vessel's deep, mobile position behind a flexing joint and its function as the sole conduit feeding the lower leg's arterial trifurcation, preserving flow during repair is critical to avoiding limb-threatening ischemia, and surgical exposure typically requires either a medial or posterior approach to the fossa.
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: Synthetic Substitute
Synthetic Substitute designates a device made from manufactured, non-biologic material, such as mesh or prosthetic components, used to replace or augment a body part. It is distinguished from the two tissue substitute categories by its artificial composition, which carries different considerations for integration and long-term durability than biologic grafts.
Coding & Documentation
Coders should confirm from the operative note that the native artery segment was left in place and that material, whether a bovine pericardial patch, synthetic patch, or covered endograft, was added to reinforce or widen it. The device value must reflect the specific material used, and the body part value should reflect the arterial segment being reinforced, which for endovascular aneurysm repair can span multiple named segments requiring multiple codes.
A frequent error is coding patch angioplasty performed after an endarterectomy as part of the Extirpation code for the plaque removal rather than as a separate Supplement code, when current guidance requires both steps to be captured. Another common mistake is applying Replacement device values to what is actually a reinforcing supplement.