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Transfer Trunk Muscle, Left to Superficial Inferior Epigastric Artery Flap with No Device, Percutaneous Endoscopic Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | K Muscles |
| Operation | X Transfer |
| Body Part | G Trunk Muscle, Left |
| Approach | 4 Percutaneous Endoscopic |
| Device | Z No Device |
| Qualifier | 8 Superficial Inferior Epigastric Artery Flap |
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 move a muscle, or part of one, to a new location while keeping its original blood supply and nerve connections intact, so the relocated muscle can take over a function normally performed by a different muscle or body part. Classic examples include moving the latissimus dorsi to restore shoulder or elbow motion, or transferring the gracilis muscle from the thigh to the face to restore movement after facial paralysis.
Surgeons choose this approach when a muscle has been damaged, is absent, or no longer works due to nerve injury, but a neighboring muscle with similar mechanical properties can be repositioned to substitute for it. Because the transferred muscle keeps its own blood and nerve supply as it is moved, recovery focuses on the tissue adapting to its new role and the patient relearning how to activate it for the new function.
Anatomy & Axis Detail
Trunk Muscle, Left
The left trunk musculature, encompassing large flat muscles such as latissimus dorsi and portions of the abdominal wall depending on level, offers surgeons a durable, well-vascularized source of tissue for functional transfer. In a left trunk muscle transfer, the muscle is detached at one end but its vascular pedicle and nerve supply are preserved so it can be rotated to a new anatomic position, commonly to restore shoulder abduction or reconstruct chest and back wall defects. The bulk and pliability of these muscles make them suitable for covering large functional deficits, but their size also means careful planning of the arc of rotation to avoid pedicle kinking. Precise naming of the muscle transferred is necessary since the left trunk contains several muscles of comparable size and role.
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: Superficial Inferior Epigastric Artery Flap
Superficial Inferior Epigastric Artery Flap qualifies a reconstruction procedure using abdominal tissue supplied by the superficial inferior epigastric vessels rather than the deeper perforating vessels used in a DIEP flap. Because it spares the abdominal fascia entirely, it is considered less invasive than DIEP or TRAM options when the vessel anatomy allows its use.
Coding & Documentation
The operative note must show that the muscle was moved to a new location while remaining attached to its original vascular pedicle and nerve, and that it was left in place to serve a new functional role rather than being fully detached and reattached elsewhere with new vessel connections. Coders look for language identifying both the origin and the destination of the muscle. A common mistake is coding Transfer when the muscle was actually completely detached and reconnected with microsurgical vessel anastomosis at the new site, which represents a free tissue transfer requiring different coding, or overlooking a companion procedure needed to secure the muscle at its new attachment point.
Commonly Confused With
This is most often confused with free muscle flap transfers, where the muscle is fully detached and its vessels are surgically reconnected at the new site - that scenario requires additional vascular bypass coding rather than Transfer alone. It is also distinct from Transplantation, which involves moving tissue from a donor person or site to serve as a replacement rather than relocating the patient's own muscle to take over a nearby function.