04BF0ZZ
Excision Internal Iliac Artery, Left to No Qualifier with No Device, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 4 Lower Arteries |
| Operation | B Excision |
| Body Part | F Internal Iliac Artery, Left |
| Approach | 0 Open |
| 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 describes surgical procedures that cut out a portion of a lower extremity artery without replacing what is removed, typically to obtain a tissue sample for diagnosis or to remove a segment of diseased vessel wall. Unlike procedures aimed at reopening or bypassing a blocked artery, Excision here is about physically taking a piece of the vessel itself, whether for biopsy purposes or as a limited resection.
Common reasons for this procedure include biopsying a suspicious arterial wall lesion, removing a small aneurysmal segment that does not require full graft replacement, or excising a portion of vessel affected by infection or tumor invasion. The remainder of the artery is generally left in place and, depending on the clinical situation, may be repaired or simply closed.
Because only a portion of the body part is taken and no replacement graft is inherently part of this root operation, Excision in the lower arteries is usually a more limited intervention than a full arterial resection and reconstruction, reserved for situations where sampling or partial removal addresses the clinical problem.
Anatomy & Axis Detail
Internal Iliac Artery, Left
The left internal iliac artery supplies the left pelvic organs, gluteal muscles, and perineal structures, branching extensively and forming rich collateral connections with the contralateral side. Excision of a segment is generally performed for aneurysmal disease, frequently identified during evaluation of an abutting common iliac or aortic aneurysm, or when the vessel is deliberately divided to facilitate access for pelvic surgery, such as extensive oncologic resections. Because of the dense collateral network in the pelvis, unilateral loss of this vessel is usually well tolerated, though care is taken to avoid compromising flow to the sigmoid colon, bladder, or reproductive structures it helps perfuse. Documentation should reflect whether the excision was the primary indication for the procedure or an adjunct to addressing a broader aortoiliac aneurysm.
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.
Coding & Documentation
Coding this family correctly depends on documentation confirming that a portion, not the entirety, of the specific named lower artery was cut out and removed from the body, along with the approach used to reach it. If the pathology or operative report indicates the entire named vessel segment was removed, Resection rather than Excision is the appropriate root operation, so coders must read closely for that distinction.
A frequent error is defaulting to Excision for any biopsy-related procedure without checking whether the tissue was actually excised versus merely sampled with a needle, which may instead be coded differently depending on technique. Another common mistake is failing to code a concurrent repair, such as suture closure of the arteriotomy, separately when it represents more than the value included in the excision itself, or conversely coding a repair that is inherent to the excision procedure.