01C20ZZ
Extirpation Phrenic 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 | C Extirpation |
| Body Part | 2 Phrenic Nerve |
| Approach | 0 Open |
| Device | Z No Device |
| Qualifier | Z No Qualifier |
Operation Definition
Taking or cutting out solid matter from a body part
Procedure Overview
This family applies when a surgeon removes solid abnormal material from in or around a peripheral nerve without cutting out any of the nerve tissue itself. Typical examples include removing a calcified deposit compressing a nerve, extracting a foreign body such as glass or metal fragments lodged near a nerve after an injury, or clearing organized clot or scar debris that formed around a nerve following trauma or prior surgery.
The purpose is to eliminate something that does not belong in the body and is interfering with nerve function, rather than to treat the nerve tissue itself. Because the material removed is often the direct cause of nerve compression or irritation, patients may notice improvement in pain or sensation once it is taken out.
Anatomy & Axis Detail
Phrenic Nerve
The phrenic nerve arises primarily from the C4 root, with contributions from C3 and C5, and descends through the neck and mediastinum to provide the sole motor supply to the diaphragm on each side. Extirpation of this nerve involves removing solid abnormal material, such as a hematoma, foreign body, or calcified debris, from along its course rather than excising nerve tissue, and is performed to relieve compression that could impair diaphragmatic function. Given the nerve's critical role in respiration, any procedure in its vicinity requires particular caution, since even minor injury can cause diaphragmatic paralysis and significant breathing difficulty. The nerve's long course through the neck, thorax, and mediastinum means the material extirpated could be located at any of several levels, which should be specified in the documentation.
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
Assignment depends on clear documentation that the material removed was abnormal and separate from the nerve itself, such as a foreign object, thrombus, or non-biological debris, rather than a piece of the nerve or a growth arising from it. The operative note should describe what was found and removed, and whether it required cutting through tissue to reach it (which does not change the root operation, since the objective is still removal of solid matter). A common mistake is using Extirpation when a cyst or tumor arising from the nerve was actually excised, since tumor tissue that is part of the body part belongs under Excision, not Extirpation. Coders should also check whether imaging findings match the operative description of the material removed.