ICD-10-PCS Billable Code

0MUK4JZ

Supplement Perineum Bursa and Ligament to No Qualifier with Synthetic Substitute, Percutaneous Endoscopic Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body SystemM Bursae and Ligaments
OperationU Supplement
Body PartK Perineum Bursa and Ligament
Approach4 Percutaneous Endoscopic
DeviceJ Synthetic 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

Perineum Bursa and Ligament

Perineal bursae and ligaments are the small connective tissue structures supporting the pelvic floor and perineal body, an area subject to significant stress from childbirth, chronic straining, or pelvic organ prolapse. Because the perineum has limited native tissue bulk, defects here often cannot be closed with sutures alone and instead require augmentation with graft material to restore structural support and prevent recurrent prolapse or fistula. Supplement procedures in this region typically involve placing biologic or synthetic mesh to reinforce weakened ligamentous support beneath the perineal skin and muscles. Coders should confirm the graft type from the operative note, as this determines the device character, and distinguish true reinforcement of existing tissue from operations that remove or replace the structure entirely, which would fall under a different root operation.

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: Synthetic Substitute

Synthetic Substitute designates a device made from manufactured, non-biologic material, such as mesh or prosthetic components, used to replace or augment a body part. It is distinguished from the two tissue substitute categories by its artificial composition, which carries different considerations for integration and long-term durability than biologic grafts.

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.