Traumatic rupture of unsp ulnar collateral ligament, init

This diagnosis code signifies an acute tear or complete disruption of the ulnar collateral ligament (UCL) in the elbow, where the specific location or bundle of the ligament is not documented. This injury typically results from a sudden, forceful valgus stress to the elbow, often seen in throwing athletes or falls.

Apply this code for initial encounters when a patient presents with a newly diagnosed, acute traumatic rupture of the elbow's ulnar collateral ligament, and the medical record does not specify which part of the UCL (e.g., anterior, posterior, or oblique bundle) was affected. This is appropriate when the injury is clearly traumatic and not due to chronic degeneration.

• Ensure the documentation explicitly states "rupture" or "tear" of the UCL, not just a sprain.
• Verify that the encounter is the initial treatment for this specific injury.
• Only use this code when the specific bundle of the UCL is not identified in the physician's notes.