ICD-10-PCS Billable Code

0LM40ZZ

Reattachment Upper Arm Tendon, Left to No Qualifier with No Device, Open Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body SystemL Tendons
OperationM Reattachment
Body Part4 Upper Arm Tendon, Left
Approach0 Open
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 Arm Tendon, Left

On the left upper arm, tendons of the biceps, triceps, and brachialis are the structures most commonly requiring reattachment, typically following a traumatic tear away from their bony insertion or intentional detachment during tumor or contracture surgery. A classic example is repair of a retracted distal biceps tendon, where the torn end is pulled back to the radial tuberosity and fixed with anchors or a transosseous tunnel. Because reattachment specifically means returning a body part to its normal location or a new suitable one, it applies whether the tendon separated from injury or was deliberately released during the same operative episode. Coders should note the specific tendon and the fixation site, since the left upper arm's tendon anatomy is functionally identical to the right but reported under a distinct body part value.

Approach: Open

Open approach means the surgeon cuts through skin, mucous membrane, or other tissue layers to physically expose the target site to view before performing the procedure. It gives direct visualization and hands-on access, distinguishing it from Percutaneous approaches where instruments pass through a small puncture without exposing the site. Open is typical for procedures needing wide access, such as most laparotomies.

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.