ICD-10-PCS Billable Code

0MUB4KZ

Supplement Upper Extremity Bursa and Ligament, Left to No Qualifier with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body SystemM Bursae and Ligaments
OperationU Supplement
Body PartB Upper Extremity Bursa and Ligament, Left
Approach4 Percutaneous Endoscopic
DeviceK Nonautologous Tissue Substitute
QualifierZ No Qualifier

Operation Definition

Putting in or on biological or synthetic material that physically reinforces and/or augments the function of a portion of a body part

Procedure Overview

Supplement procedures add biological or synthetic material to reinforce or augment a bursa or, much more commonly, a ligament that remains largely intact but needs additional structural support. A typical example is augmenting a partially torn ligament with a collagen patch, mesh, or allograft strip to bolster its strength without removing and fully replacing the native tissue.

This approach is chosen when a ligament has enough healthy tissue to preserve but is not strong enough on its own to withstand normal joint stress, often in cases of chronic laxity, partial tearing, or degenerative thinning. It is also used in some reconstructive techniques that combine native ligament preservation with graft augmentation, an increasingly common alternative to full replacement for certain knee and ankle ligament injuries. The added material integrates with the existing structure over time, aiming to restore joint stability while keeping as much of the patient's own tissue as possible.

Anatomy & Axis Detail

Upper Extremity Bursa and Ligament, Left

For the left upper extremity, this bursa and ligament value applies to structures along the arm that fall outside the specifically named shoulder, elbow, wrist, or hand groupings, such as diffuse bursal tissue along the forearm. Supplement procedures here reinforce a ligament or bursa that has become attenuated or thinned, typically from chronic mechanical stress, using graft material layered onto the native structure to restore its supportive function. Because this is a catch-all category, accurate use depends on the operative note ruling out a more specific joint-level body part before defaulting to the general upper extremity designation. Laterality documentation confirming the left side, along with a description of the graft material, is necessary for complete and accurate code assignment.

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.

Device: Nonautologous Tissue Substitute

Nonautologous Tissue Substitute refers to biologic material sourced from a donor or another species, such as an allograft or xenograft, used to replace a body part. It differs from Autologous Tissue Substitute by tissue origin outside the patient's own body, and from Synthetic Substitute by being biologic rather than manufactured material.

Coding & Documentation

Coders assign Supplement when the operative note describes reinforcing an existing bursa or ligament with graft, mesh, or other material while the native structure is left in place, not excised. Key language includes "augmented," "reinforced," or "buttressed with graft." The most frequent error is confusing this with Replacement - if the surgeon documents that the damaged ligament was removed before the new material was placed, Replacement is correct instead. Coders should also confirm the supplementing material is a recognized device or biologic value, since the device character of the procedure affects code selection.

Commonly Confused With

ReplacementReplacement is the closest and most error-prone comparison; the distinguishing question is whether the native ligament or bursa was taken out (Replacement) or left in place and reinforced (Supplement).
RepairRepair should be used instead when the procedure only involves suturing existing tissue with no added material.
RepositionReposition is unrelated in purpose, since it addresses malalignment rather than structural weakness, and does not involve adding reinforcing material.