0LXN4ZZ
Transfer Lower Leg Tendon, Right to No Qualifier with No Device, Percutaneous Endoscopic Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | L Tendons |
| Operation | X Transfer |
| Body Part | N Lower Leg Tendon, Right |
| Approach | 4 Percutaneous Endoscopic |
| Device | Z No Device |
| Qualifier | Z No Qualifier |
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
Tendon transfer procedures move a functioning tendon, along with its muscle attachment, from its original insertion point to a new location so it can take over a movement that has been lost due to nerve injury, muscle paralysis, or irreparable tendon damage elsewhere. The tendon is not removed from the body; it is rerouted while keeping its blood supply and nerve connection intact.
This approach is used when restoring the original damaged tendon is not possible or would not regain function, such as after a peripheral nerve injury that has left a muscle group permanently unable to fire, or in longstanding rotator cuff tears where the original muscle-tendon unit is no longer viable. A classic example is transferring a wrist flexor tendon to restore finger extension after radial nerve palsy.
Because the transferred tendon must learn a new job, rehabilitation includes retraining the patient to consciously activate the muscle for its new purpose, in addition to standard healing time.
Anatomy & Axis Detail
Lower Leg Tendon, Right
Right lower leg tendons, including those of the tibialis anterior, tibialis posterior, peroneal muscles, and gastrocnemius-soleus complex, control ankle and foot motion through their long excursions from the calf to the foot. A right lower leg tendon transfer moves one of these tendons, preserving its blood and nerve supply, to a new insertion to compensate for a paralyzed or nonfunctional muscle, most frequently performed for foot drop correction, spastic equinovarus deformity, or peroneal nerve palsy affecting the right limb. Because several tendons pass through shared retinacular tunnels around the ankle, precise documentation of the donor tendon and its rerouted path and insertion is necessary, and laterality must be clearly recorded given how commonly these transfers are performed bilaterally in sequential procedures.
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.
Coding & Documentation
Correct code assignment depends on documentation identifying both the tendon that was moved and the body part whose function it is now taking over, since ICD-10-PCS captures the qualifier for the new functional purpose. The operative note should describe the tendon's original attachment, its new insertion site, and confirm that it retained its native blood and nerve supply throughout the move.
A common mistake is coding a tendon transfer as Transplantation, which applies only when tissue from another individual or a different body site is used with no native vascular connection preserved. Another frequent error is failing to capture the qualifier value that reflects the body part whose function is being restored, since Transfer in ICD-10-PCS requires specifying what the moved tendon is now accomplishing.