Superficial endometriosis of unspecified fallopian tube

This code signifies the presence of endometrial tissue on the surface of a fallopian tube, without specifying which tube is affected. This ectopic tissue behaves similarly to normal uterine lining, undergoing cyclical changes and potentially causing pain or infertility. It is considered a mild form of endometriosis affecting the adnexa.

Use this code when documentation confirms superficial endometriosis involving a fallopian tube, but the laterality (left or right) is not specified. This often occurs during laparoscopic visualization where the exact tube is not explicitly noted, or when pathology reports confirm the presence of endometrial implants on fallopian tube tissue without laterality.

• Ensure documentation clearly states "superficial" involvement of the fallopian tube.
• Avoid using this code if laterality (left or right fallopian tube) is specified; use the more specific N80.211 or N80.212.
• Consider sequencing this code after codes for associated symptoms like chronic pelvic pain (e.g., R10.2) or infertility (e.g., N97.9).