ICD-10-PCS Billable Code

0PSK44Z

Reposition Ulna, Right to No Qualifier with Internal Fixation Device, Percutaneous Endoscopic Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body SystemP Upper Bones
OperationS Reposition
Body PartK Ulna, Right
Approach4 Percutaneous Endoscopic
Device4 Internal Fixation Device
QualifierZ No Qualifier

Operation Definition

Moving to its normal location, or other suitable location, all or a portion of a body part

Procedure Overview

This family describes moving a bone of the skull, face, chest wall, or upper extremity back to its normal anatomic location, or to another location that will function better, without cutting the bone free and removing it from the body. It's the code family used for reducing a displaced fracture, correcting a malunion, or realigning a bone that has shifted out of its normal position due to trauma or a congenital condition.

The procedure preserves the bone's own blood supply and continuity while adjusting its position - fixation with pins, plates, or screws is often part of the same operative episode to hold the corrected alignment in place.

Anatomy & Axis Detail

Ulna, Right

The right ulna is the medial, relatively stable forearm bone that forms the primary articulation with the humerus at the elbow, and its reposition addresses fractures of the olecranon, shaft, or distal ulna, often from direct falls onto the elbow or forearm. Because the proximal ulna forms the trochlear notch that engages the humerus, displaced olecranon fractures can compromise elbow extension via the triceps attachment, making accurate realignment important for joint function. Shaft fractures frequently occur alongside radial injury, as in a Monteggia fracture-dislocation, so the ulna may be realigned in conjunction with correction of a radial head dislocation. Documentation should identify the fractured segment and note any associated radial or elbow joint involvement, since these details shape the overall injury picture beyond the ulnar reposition itself.

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: Internal Fixation Device

Internal fixation device is the general value for hardware such as plates, screws, or rods placed within the body to stabilize bone or joint, used when a more specific configuration is not indicated. It stands in contrast to the named subtypes - Rigid Plate, Intramedullary, Sustained Compression, and Intramedullary Limb Lengthening - which specify how the hardware achieves stabilization.

Coding & Documentation

A coder looks for language describing realignment, reduction, or repositioning of a fragment or whole bone as the defining clue, distinguishing it from repair language about restoring damaged tissue in place. Fixation devices used to hold the new position should be captured through the device value on the same code rather than as a separate procedure when performed at the same operative site. A common error is coding an open reduction and internal fixation entirely as repair, missing that the reduction component is reposition while the fixation is captured through the device character. Another pitfall is failing to distinguish reposition from resection when a bone fragment is removed rather than realigned.

Commonly Confused With

RepairRepair is the family most often confused with reposition, since fracture care can involve both language and both may appear in the same operative note; the deciding factor is whether the fragment was moved to a new position (reposition) or a structural defect was simply fixed in place (repair).
ResectionResection is distinct in that it involves cutting a portion of bone out entirely rather than relocating it.