ICD-10-PCS Billable Code

06UN4JZ

Supplement Femoral Vein, Left to No Qualifier with Synthetic Substitute, Percutaneous Endoscopic Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body System6 Lower Veins
OperationU Supplement
Body PartN Femoral Vein, Left
Approach4 Percutaneous Endoscopic
DeviceJ Synthetic Substitute
QualifierZ 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

This family covers procedures where material - either biological tissue or a synthetic substance - is added to a lower-body vein to reinforce its wall or bolster a function that has become impaired, without removing the vein itself. The native vessel stays in place; the added material works alongside it, much like patching or wrapping a weakened structure to give it more support.

This approach is used when a vein wall has become thin, weakened, or dilated in a way that threatens its integrity, or when a venous valve or structure needs added support to improve its performance without a full replacement. Examples include reinforcing a vein wall with a patch during repair of an aneurysmal or injured segment, or augmenting a valve-bearing area of the vein to help reduce reflux in chronic venous insufficiency.

Supplement procedures are generally less invasive in concept than full replacement, since the body's own vein continues to do the primary work while the added material provides extra structural support.

Anatomy & Axis Detail

Femoral Vein, Left

The left femoral vein parallels the femoral artery in the thigh, continuing proximally from the popliteal vein and joining the great saphenous vein before becoming the external iliac vein, and functions identically to the right-sided vessel as a major conduit for lower-limb venous return and vascular access. Supplement reinforces a wall weakened by chronic venous insufficiency, prior line placement, or focal aneurysmal dilation encountered during vascular surgery. Given the vessel's role in high-volume venous drainage and its frequent use for access, reinforcing material must restore wall strength while keeping the lumen unobstructed. The procedure applies patch or graft material over the affected segment of the native vein, and the operative note should specify the left-sided location and the reinforcing material used.

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: 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

Coding from this family depends on documentation showing that material was placed onto or into an existing vein to reinforce it, with the native vessel remaining largely intact rather than excised. The note should identify the specific vein and the reinforcing material, such as a patch, cuff, or mesh, and whether it is autologous or nonautologous.

The most frequent mistake is defaulting to Repair when a patch graft was actually used, since both can appear in operative language about "patching" a vein. If a patch or graft material is used specifically to reinforce the wall, Supplement is the correct root operation; plain Repair applies only when the vein is sutured or closed without added reinforcing material. The reverse error also occurs - coding Replacement when only part of the vein wall was augmented rather than an entire segment being taken out and substituted.

Commonly Confused With

RepairRepair is the closest and most commonly confused family, since both can involve closing or reinforcing a damaged vein; the dividing line is whether reinforcing material was actually implanted (Supplement) or the vein was simply sutured back together with no added material (Repair).
ReplacementReplacement is distinguished by the removal of the native vein segment, which does not occur in Supplement.
RestrictionRestriction procedures, which narrow a vein's lumen rather than reinforce its wall, address a different clinical goal entirely.