Accessory ovary

This code represents the presence of an extra ovarian tissue structure located separately from the main ovary. This accessory tissue may or may not be functional and can be found in various locations within the pelvic cavity. It is a congenital anomaly of the female reproductive system.

Use this code when documentation clearly indicates the identification of an accessory ovary, whether discovered incidentally during imaging, surgery, or as part of an investigation for pelvic pain or infertility. Documentation should specify "accessory ovary" or "supernumerary ovary."

• Differentiate from ovarian remnants (N83.8), which are typically post-surgical.
• Ensure documentation specifies "accessory" rather than simply "extra" to avoid confusion with other ovarian findings.
• Code any associated symptoms or complications, such as torsion or cyst formation, in addition to this code.