ICD-10-PCS Billable Code

0LMM4ZZ

Reattachment Upper Leg Tendon, Left to No Qualifier with No Device, Percutaneous Endoscopic Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body SystemL Tendons
OperationM Reattachment
Body PartM Upper Leg Tendon, Left
Approach4 Percutaneous Endoscopic
DeviceZ No Device
QualifierZ No Qualifier

Operation Definition

Putting back in or on all or a portion of a separated body part to its normal location or other suitable location

Procedure Overview

Reattachment procedures on tendons address situations where a tendon has been completely severed or avulsed from its normal attachment point and needs to be surgically reconnected. This happens after traumatic injuries such as lacerations from sharp objects, sports injuries that tear a tendon from bone, or amputation and replantation cases where an entire digit or limb segment, along with its tendons, must be rejoined.

The goal is to restore continuity so the muscle-tendon unit can once again transmit force to move a joint, whether that's a finger flexor tendon cut in a workshop accident or an Achilles tendon torn from the calcaneus. Surgeons typically suture the tendon ends together or anchor the tendon back to bone using sutures or fixation devices, then protect the repair with splinting or bracing during healing.

Because tendons have limited blood supply, timing and technique matter, and reattachment is often performed urgently to give the best chance of the tissue healing back together and regaining strength.

Anatomy & Axis Detail

Upper Leg Tendon, Left

On the left side, the upper leg tendon group again centers on the quadriceps and hamstring attachments, which stabilize the hip and knee during gait and are frequently torn in traumatic falls or athletic injuries involving sudden eccentric loading. Reattachment is coded when the tendon has been completely detached from its bony origin or insertion and is surgically restored to its anatomic position, typically using suture anchors driven into the femur, patella, or pelvis. Documentation should specify the exact tendon involved, since the upper leg contains several distinct tendon groups with different bony attachment sites and mechanical roles. Because the left and right upper leg tendons are coded separately, laterality must be confirmed from the operative note, and any accompanying muscle or ligament repair performed through the same incision may require separate coding.

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

A Reattachment code applies when the documentation clearly states that a tendon was completely separated from its body and is being put back to its normal or a suitable anatomic location. The operative note should specify which tendon was involved, whether the reattachment is to its original site or an adjacent structure, and the approach used, since fine and gross motor tendons in the hand and foot have many separately identified body part values.

The recurring assignment error is coding Reattachment for injuries that are only partial tears, which belong under Repair instead, since Reattachment requires complete detachment. Another common mistake is confusing tendon reattachment during a replantation with the reattachment codes for the limb or digit itself; both may need to be coded separately when multiple structures are reconnected in one procedure. Coders also sometimes miss that reattaching a tendon to a different location than its original one, such as during certain reconstructive transfers, may actually point to Transfer rather than Reattachment.

Commonly Confused With

RepairReattachment is most often confused with Repair, and the distinction hinges entirely on whether the tendon was completely detached, which calls for Reattachment, or only partially damaged, which calls for Repair.
TransferIt is also confused with Transfer, used when an intact tendon is moved to a new location to take over a different function while keeping its native attachment at one end, rather than being reconnected at its original severed site.
ReplacementReplacement is a separate consideration when a damaged tendon segment is substituted with graft material rather than reconnected.