ICD-10-PCS Billable Code

04BW3ZZ

Excision Foot Artery, Left to No Qualifier with No Device, Percutaneous Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body System4 Lower Arteries
OperationB Excision
Body PartW Foot Artery, Left
Approach3 Percutaneous
DeviceZ No Device
QualifierZ 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

Foot Artery, Left

The left foot artery refers to the dorsalis pedis and related distal arterial branches supplying the forefoot and toes, representing the endpoint of arterial inflow to the lower extremity. Excision of tissue from this region removes diseased arterial segments, commonly linked to advanced peripheral arterial disease, diabetic microvascular and macrovascular disease, or localized infection, without intent to reconstruct the vessel during the same procedure. Given their position at the furthest reach of the arterial supply, these vessels are especially vulnerable to the effects of proximal disease, and their condition is often a determining factor in decisions about limb salvage versus amputation. Their small size and superficial course over the dorsum of the foot require meticulous technique, and excised tissue may be sent for pathological or microbiological analysis when infection is a concern.

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

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.

Commonly Confused With

ResectionExcision is most often confused with Resection, and the deciding factor is always completeness: Resection requires the entire body part to be cut out, while Excision takes only a portion.
ExtirpationIt is also distinguished from Extirpation, which removes abnormal solid matter such as plaque or thrombus rather than a piece of the artery's own structure, and from Destruction, where tissue is eradicated in place rather than physically removed.
ReplacementWhen an excised segment is replaced with a graft, an additional Replacement code may be needed alongside or instead of Excision, depending on how the operative note characterizes the extent of vessel removed.