Superfic endometriosis of the pelvic brim, unspecified side

This code describes the presence of endometrial-like tissue growing superficially on the pelvic brim, a bony ridge forming the boundary between the true and false pelvis. This ectopic tissue can cause pain and inflammation, characteristic of endometriosis, but is specifically located on the surface of the pelvic brim.

Use this code when documentation explicitly states superficial endometriosis affecting the pelvic brim, and the laterality (left or right side) is not specified. This diagnosis is typically made during surgical exploration (e.g., laparoscopy) or imaging studies.

• Ensure documentation specifies "superficial" involvement of the pelvic brim; deeper infiltration or involvement of other pelvic structures requires a more specific code.
• If laterality (left or right) is documented, use the more specific code (N80.361 or N80.362).
• Always code any associated pain or infertility separately, if documented.