04RA4KZ
Replacement Renal Artery, Left to No Qualifier with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 4 Lower Arteries |
| Operation | R Replacement |
| Body Part | A Renal Artery, Left |
| Approach | 4 Percutaneous Endoscopic |
| Device | K Nonautologous Tissue Substitute |
| Qualifier | Z No Qualifier |
Operation Definition
Putting in or on biological or synthetic material that physically takes the place and/or function of all or a portion of a body part
Procedure Overview
Replacement procedures in the lower arteries involve taking out a diseased or damaged arterial segment and putting in synthetic graft material or biological tissue to physically stand in for that piece of vessel. This is distinct from simply patching or reinforcing an artery, since the native segment is functionally substituted rather than preserved and bolstered.
A classic example is an aortobifemoral or femoral-popliteal graft placed after removing a severely diseased, occluded, or aneurysmal segment of artery, using a synthetic conduit such as Dacron or PTFE, or in some cases a harvested vein used as a full segmental replacement. Patients typically arrive at this procedure after conservative management or angioplasty has failed, or when an aneurysm poses a rupture risk that mandates excising the weakened wall.
Anatomy & Axis Detail
Renal Artery, Left
The left renal artery follows a slightly longer, more oblique course from the aorta to the left kidney than its counterpart, often passing near the splenic vessels and pancreas, which can influence surgical approach when replacement is planned. Indications mirror those on the right side, including fibromuscular dysplasia, aneurysmal degeneration, or dissection extending from the aorta, any of which can jeopardize perfusion to the left kidney and drive uncontrolled hypertension if untreated. When the diseased segment cannot be salvaged with endovascular repair alone, the surgeon excises the compromised portion and replaces it with an autologous or synthetic conduit anastomosed to healthy aorta and the distal renal artery. Coders should confirm that the operative note describes outright substitution of the vessel wall, not patch angioplasty or bypass grafting alongside the native artery.
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: Nonautologous Tissue Substitute
Nonautologous Tissue Substitute refers to biologic material sourced from a donor or another species, such as an allograft or xenograft, used to replace a body part. It differs from Autologous Tissue Substitute by tissue origin outside the patient's own body, and from Synthetic Substitute by being biologic rather than manufactured material.
Coding & Documentation
The operative report must clearly establish that a segment of native artery was excised or its function replaced, and that a graft or biological material took its place, distinguishing this from Bypass, where the diseased segment is left in place and a new route is constructed around it. Coders should identify the specific arterial body part value replaced and the device value representing the graft material, whether autologous, nonautologous, or synthetic.
A common error is coding a bypass graft as a Replacement when the original artery segment was left intact and simply routed around; another is failing to capture the correct device value when a combination of graft materials was used in a single reconstruction.