01X14Z2
Transfer Cervical Nerve to Phrenic Nerve with No Device, Percutaneous Endoscopic Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 1 Peripheral Nervous System |
| Operation | X Transfer |
| Body Part | 1 Cervical Nerve |
| Approach | 4 Percutaneous Endoscopic |
| Device | Z No Device |
| Qualifier | 2 Phrenic Nerve |
Operation Definition
Moving, without taking out, all or a portion of a body part to another location to take over the function of all or a portion of a body part
Procedure Overview
Transfer procedures on the peripheral nervous system move a nerve, still attached to its original blood and nerve supply at one end, to a new location so it can take over the function of a different, nonworking nerve. Nerve transfers are used after severe injuries, such as brachial plexus avulsions, when the original nerve supplying a muscle is damaged beyond repair but a healthy, less critical nerve nearby can be redirected to reinnervate that muscle instead. A common example is transferring a branch of the spinal accessory nerve to the suprascapular nerve to restore shoulder function after a brachial plexus injury.
Because the donor nerve is not cut free entirely but repositioned to connect with a different target, these procedures differ from a graft, which uses a separate, disconnected piece of tissue to bridge a gap. Transfer is chosen specifically when restoring the original damaged nerve directly is not feasible.
Anatomy & Axis Detail
Cervical Nerve
Cervical nerve transfer redirects a functioning nerve segment, often a branch of the spinal accessory or a redundant cervical rootlet, to reinnervate a target whose original nerve supply has been lost, commonly after brachial plexus avulsion or severe neck trauma. The cervical nerves sit deep in the neck alongside major vessels and the phrenic nerve, so dissection requires care to preserve diaphragmatic and vascular structures while isolating a donor fascicle with intact proximal continuity. The transferred nerve is coapted to the distal stump of the recipient nerve, allowing axons to regrow along the new pathway toward muscles such as those of the shoulder or upper arm. Outcomes depend on how quickly reinnervation reaches the motor end plates, so cervical transfers are typically performed early after injury and are documented by donor and recipient nerve identity.
Approach: Percutaneous Endoscopic
Percutaneous Endoscopic combines a puncture through skin or mucous membrane with insertion of an endoscope to visualize the procedure internally, as in laparoscopic cholecystectomy. It is distinguished from plain Percutaneous by the presence of scope-guided visualization, and from Via Natural or Artificial Opening Endoscopic by its route being a new puncture rather than an existing orifice or stoma.
Qualifier: Phrenic Nerve
The Phrenic Nerve, arising chiefly from cervical roots C3 through C5, provides the sole motor supply to the diaphragm and is essential to spontaneous breathing. As a qualifier it identifies this specific nerve as the procedure's target, distinguishing it from the broader cervical nerve qualifier from which it originates and from other neck structures involved in similar procedures.
Coding & Documentation
The operative note needs to name both the donor nerve being moved and the recipient nerve or muscle it is being connected to, since the body part value coded reflects the nerve being transferred, not the target. A frequent coding error is mistaking a nerve transfer for a nerve graft repair; the distinguishing detail is whether the donor nerve retains its native blood supply and proximal attachment (Transfer) or is a free segment used to bridge a gap in a different nerve (Repair or Replacement). Coders should also check whether the transferred nerve is being coapted directly to the recipient nerve or routed through a graft, which can mean an additional code is warranted.