ICD-10-PCS Billable Code

0MNFXZZ

Release Sternum Bursa and Ligament to No Qualifier with No Device, External Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body SystemM Bursae and Ligaments
OperationN Release
Body PartF Sternum Bursa and Ligament
ApproachX External
DeviceZ No Device
QualifierZ No Qualifier

Operation Definition

Freeing a body part from an abnormal physical constraint by cutting or by the use of force

Procedure Overview

Release procedures free a bursa or ligament from something abnormally constraining it, using cutting or manual force to relieve that pressure. Unlike removing a foreign object, the abnormal constraint here is typically scar tissue, adhesions, or a tight band of the ligament itself pressing on a nerve or restricting motion.

The most familiar example is carpal tunnel release, where the transverse carpal ligament is cut to relieve pressure on the median nerve running underneath it. Similar procedures address trigger finger, where a tight pulley ligament catches the tendon, or joint contractures where scar tissue around a bursa or ligament limits normal movement.

These procedures are chosen when conservative treatment such as splinting, injections, or physical therapy has not resolved the constriction, and the goal is restoring normal movement or relieving nerve compression by cutting the tissue that is causing the problem.

Anatomy & Axis Detail

Sternum Bursa and Ligament

The sternum's ligamentous supports include the sternoclavicular ligaments anchoring the clavicle, the costosternal ligaments connecting the rib cartilages to the sternal body, and the interchondral ligaments between adjacent costal cartilages. Release of these structures is uncommon but may be needed when post-traumatic or post-sternotomy scarring restricts chest wall expansion or clavicular motion, or when a tight sternoclavicular ligament contributes to joint instability requiring capsular loosening rather than repair. The surgeon divides the fibrotic band while preserving the joint's overall stability, since these ligaments are central to anterior chest wall integrity and breathing mechanics. Given how few procedures target this specific structure, documentation should clearly distinguish ligament release from joint resection or fixation performed on the sternum.

Approach: External

External approach applies to procedures performed directly on the skin or mucous membrane, or on an accessible body surface, without any instrumentation passing through a puncture or orifice. It covers things like manual reduction of a fracture or excision of a skin lesion. It differs from Via Natural or Artificial Opening in that no internal passage is entered at all, only the exposed surface.

Coding & Documentation

The documentation should identify what was constraining the body part and confirm the surgeon cut or forcibly freed the ligament or bursa itself to relieve that constraint. This differs from cases where the ligament is the source of pressure on a different structure, such as a nerve, since ICD-10-PCS codes the release to the body part being freed, which is usually the ligament that was cut, not the nerve that benefited.

A frequent mixup is coding Release when the actual procedure removed a discrete blockage, such as scar tissue excised entirely rather than simply divided, which would instead point toward Excision. Coders also need to check the body part convention carefully in carpal tunnel and similar cases, since the transverse carpal ligament is classified under Bursae and Ligaments even though the clinical benefit is to a nerve, and the release is coded to the ligament being cut, not the nerve.

Commonly Confused With

DivisionRelease is frequently confused with Division, which also involves cutting a body part but without any therapeutic objective of freeing it from constraint.
ExcisionIt is also mixed up with Excision, since both can involve cutting scar tissue; the difference is whether restrictive tissue is cut through to free the structure (Release) or whether a piece of tissue is actually cut out and removed (Excision).