01BF0ZZ
Excision Sciatic Nerve to No Qualifier with No Device, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 1 Peripheral Nervous System |
| Operation | B Excision |
| Body Part | F Sciatic Nerve |
| 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 procedures that remove a portion of a peripheral nerve or its associated tissue, such as taking a small nerve biopsy to diagnose conditions like vasculitis or amyloidosis, or removing a segment of nerve that contains a benign tumor such as a schwannoma or neurofibroma. Unlike a full nerve resection performed to eliminate the nerve's function entirely, this operation takes out only part of the structure while leaving the rest intact.
Patients typically undergo this procedure either because a diagnosis cannot be made without direct tissue sampling, or because a growth on the nerve needs to be removed for symptom relief or to rule out malignancy. Recovery depends heavily on which nerve was involved and how large a segment was taken, since sensory or motor deficits can result even from a partial excision.
Anatomy & Axis Detail
Sciatic Nerve
The sciatic nerve, the body's largest and longest peripheral nerve, exits the pelvis through the greater sciatic notch and travels down the posterior thigh before dividing into the tibial and common peroneal branches near the popliteal fossa. Excision of this nerve, or a portion of it, is performed for nerve sheath tumors such as schwannomas, for malignant peripheral nerve sheath tumors, or when tumor extending from adjacent gluteal, thigh, or pelvic structures has invaded the nerve and cannot be spared during oncologic resection. Given its size and dual motor-sensory contributions to the entire lower leg and foot, even a segmental excision carries substantial risk of foot drop and sensory loss below the knee. Coders should confirm from the operative note whether the excision targeted a discrete lesion along the nerve or a defined nerve segment.
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
Coders assign this family when the operative report describes cutting out part of a nerve or a lesion attached to it, with no replacement material used. The pathology report and surgeon's description of margins help confirm that a distinct portion, rather than the entire nerve, was removed. A frequent assignment error is applying Excision when the whole nerve was actually transected and not reconnected, which is more accurately captured as Resection in body systems that support it, or confusing a diagnostic nerve biopsy (still Excision) with an incisional biopsy of an unrelated soft tissue mass nearby. Documentation should also clarify whether the nerve itself or a surrounding structure, like a neuroma confined to scar tissue, was the target.