Superficial endometriosis of bilateral pelvic sidewall

This code signifies the presence of endometrial tissue implants on the surface of both the left and right pelvic sidewalls. These implants are located superficially, meaning they do not deeply infiltrate the underlying tissues. This condition is a form of endometriosis, characterized by the growth of endometrial-like tissue outside the uterus.

Use this code when documentation explicitly states superficial endometriosis affecting both pelvic sidewalls. This diagnosis is typically made during laparoscopic examination or other surgical procedures where the implants are visually identified and their location and depth are noted. Supporting documentation should clearly specify "superficial" and "bilateral pelvic sidewall."

• Ensure documentation specifies "superficial" involvement; deep infiltration would require a different subcategory.
• Confirm bilateral involvement; unilateral disease would be coded with N80.331 or N80.332.
• Always review operative reports and pathology findings for precise anatomical location and depth of endometrial implants.