Cyst of epididymis

This code represents a benign, fluid-filled sac that forms on the epididymis, a coiled tube located at the back of the testicle that stores and carries sperm. These cysts are typically asymptomatic but can occasionally cause discomfort or be palpable during physical examination. They are distinct from other testicular masses.

Use this code when documentation clearly indicates the presence of a cyst originating from the epididymis. This diagnosis is often made incidentally during imaging studies (e.g., ultrasound) or during a physical examination for scrotal pain or swelling. Supporting documentation should specify the location as epididymal.

• Differentiate from hydrocele (N43.3-), which is fluid accumulation around the testicle, not within the epididymis itself.
• Do not use for spermatocele (N43.4-), which is a cyst containing sperm, as this code specifically refers to a simple epididymal cyst.
• If the cyst is symptomatic, code the associated symptom (e.g., scrotal pain R10.84) as a secondary diagnosis.