Torsion of appendix epididymis

This code signifies a condition where the appendix epididymis, a small vestigial appendage of the epididymis, twists on its stalk, leading to acute scrotal pain. This torsion can cause ischemia and infarction of the appendage, mimicking more serious conditions like testicular torsion.

Use this code when documentation confirms a diagnosis of torsion of the appendix epididymis, typically presenting with acute unilateral scrotal pain, swelling, and tenderness. This diagnosis is often made clinically, sometimes supported by ultrasound findings showing a twisted appendage or normal testicular blood flow.

• Differentiate carefully from testicular torsion (N46.1-) or torsion of the appendix testis (N44.03), as treatment and prognosis differ.
• Ensure documentation specifies "appendix epididymis" to avoid confusion with other scrotal appendage torsions.
• Consider an additional code for associated symptoms like scrotal pain (R10.2) if not inherent to the primary diagnosis.