Deep endometriosis of unspecified fallopian tube

This code signifies the presence of deep endometrial tissue implants within the muscular wall or serosa of an unspecified fallopian tube. This condition can cause significant pain, infertility, and adhesions. It represents a more severe form of endometriosis affecting the fallopian tubes.

Assign this code when documentation confirms deep endometriosis involving a fallopian tube, but the specific laterality (left or right) is not specified. This typically occurs following surgical exploration or advanced imaging where the depth of invasion is noted.

• Ensure documentation clearly states "deep" endometriosis and involvement of the fallopian tube.
• If laterality is specified (e.g., deep endometriosis of left fallopian tube), use the more specific N80.221 or N80.222.
• Do not confuse with superficial endometriosis of the fallopian tube (N80.21-).