06B53ZZ
Excision Superior Mesenteric Vein to No Qualifier with No Device, Percutaneous Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 6 Lower Veins |
| Operation | B Excision |
| Body Part | 5 Superior Mesenteric Vein |
| Approach | 3 Percutaneous |
| Device | Z No Device |
| Qualifier | Z No Qualifier |
Operation Definition
Cutting out or off, without replacement, a portion of a body part
Procedure Overview
This family covers surgical removal of a portion of a vein in the leg, groin, pelvis, or lower abdomen, without replacing the tissue taken out. In the lower extremities this most often means cutting away a segment of a varicose or diseased superficial vein, such as a stab avulsion of tributary branches during varicose vein surgery, or taking a wedge or segment of a deeper vein like the femoral or popliteal for diagnostic biopsy. The vein tissue removed is typically sent to pathology or discarded because it is no longer functioning normally.
Surgeons perform these procedures to relieve symptoms from varicose disease (aching, swelling, skin changes), to diagnose suspected vascular tumors or inflammatory conditions of the vein wall, or to remove a vein segment that will be reused elsewhere in the body, such as harvesting the greater saphenous vein for coronary or peripheral bypass grafting. Unlike stripping the entire length of a vein, excision here refers to taking out a defined portion while leaving the rest of the vein bed intact.
Patients typically undergo this under local, regional, or general anesthesia depending on how extensive the removal is, and recovery is usually brief for isolated segment excisions such as saphenous vein harvest or stab avulsions.
Anatomy & Axis Detail
Superior Mesenteric Vein
The superior mesenteric vein drains the small intestine and proximal colon and joins the splenic vein to form the portal vein, making it a critical structure encountered during pancreaticoduodenectomy when a pancreatic head tumor abuts or invades the vessel. Excision of a segment of this vein is performed to achieve tumor clearance, and because it is a high-flow vessel essential to intestinal venous return, resection is almost always immediately followed by reconstruction, though the reconstruction itself is coded separately from the excision. The operative report should clearly delineate the length and location of vein removed, distinguishing a partial segmental excision from complete resection with vascular replacement, and coders should confirm the procedure was performed for tissue removal and pathologic evaluation rather than solely for vascular reconstruction purposes.
Approach: Percutaneous
Percutaneous describes entry by needle or instrument puncture through the skin or mucous membrane to reach the site of the procedure, without cutting the tissue open or using a visualizing scope. It differs from Open in that the site itself is never exposed, and from Percutaneous Endoscopic in that no endoscope is used to see internal structures. Common examples include needle biopsies and injections.
Coding & Documentation
A coder should confirm the operative note describes cutting out a discrete portion of vein, not stripping the entire vessel with a stripper device and not simply ligating or tying it off. Documentation should specify the named vein (great saphenous, small saphenous, femoral, popliteal, or an unspecified lower extremity vein) and confirm no graft or substitute material replaced the excised segment. Saphenous vein harvest for later use as a bypass conduit still codes to Excision in this body system even though the vein is destined for use elsewhere, because nothing replaces it at the harvest site.
The most common assignment error is confusing Excision with Extraction when the operative report actually describes stripping the full length of the saphenous vein with a stripper wire or endovenous device, which is Extraction because force is used to pull the vessel out rather than cut it in sections. Coders also sometimes default to Excision for stab avulsion phlebectomy of varicose tributaries when the documentation actually supports a different root operation if the vein is being obliterated in place rather than physically removed.