01Q23ZZ
Repair Phrenic Nerve to No Qualifier with No Device, Percutaneous Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 1 Peripheral Nervous System |
| Operation | Q Repair |
| Body Part | 2 Phrenic Nerve |
| Approach | 3 Percutaneous |
| Device | Z No Device |
| Qualifier | Z No Qualifier |
Operation Definition
Restoring, to the extent possible, a body part to its normal anatomic structure and function
Procedure Overview
This family covers restoring a peripheral nerve to as close to its normal structure and function as possible after it has been cut, torn, or otherwise physically damaged, using suture repair or direct approximation of the nerve ends. It is the primary approach when a nerve laceration is found from a knife wound, glass injury, iatrogenic surgical injury, or a fracture that has sheared through the nerve.
The surgeon aligns the cut nerve ends under magnification, matching the internal fascicles as precisely as possible, and sutures them together so the nerve can regenerate along its original pathway. Timing matters clinically, since nerves repaired soon after injury generally recover better than those repaired after prolonged delay, though repair can still be attempted later in appropriate cases.
Outcomes depend on the nerve involved, the distance the injury is from the muscles or skin it serves, and how cleanly the nerve ends can be matched, but the goal is always to reestablish continuity using the patient's own nerve tissue.
Anatomy & Axis Detail
Phrenic Nerve
The phrenic nerve originates from cervical roots C3 through C5, descends through the neck and mediastinum along the anterior scalene muscle, and provides the sole motor supply to the diaphragm, making its integrity essential for spontaneous respiration. Repair is performed after iatrogenic injury during cardiac, thoracic, or neck surgery, or following penetrating trauma, using microsurgical suture or nerve grafting to restore continuity and preserve diaphragmatic function. Because the nerve is thin and travels a long course adjacent to the pericardium and great vessels, injury can be subtle and repair technically demanding, often requiring intraoperative nerve stimulation to confirm functional restoration. Given the direct consequence for breathing, documentation of phrenic nerve repair should note the injury level and mechanism, distinguishing it from cervical plexus or other cervical nerve repairs.
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
Documentation supporting this code should describe direct suture of nerve ends or another technique that reconnects the nerve's own tissue without adding graft material. The note should identify which specific nerve was repaired and the mechanism of injury, since that context often appears in related trauma documentation.
A common mistake is assigning Repair when the surgeon actually bridged a gap with a nerve graft or synthetic conduit, which belongs under Replacement or Supplement instead of Repair. Another frequent error is coding Repair for a procedure that was really a Release, when the nerve was found intact and simply freed from surrounding scar rather than physically damaged and sutured.