Deep endometriosis of the pelvic brim, unspecified side

This code signifies the presence of deep infiltrating endometriosis located specifically at the pelvic brim, where endometrial-like tissue grows extensively into surrounding structures. This condition can cause significant pain and organ dysfunction due to its invasive nature.

Apply this code when documentation confirms deep endometriosis involving the pelvic brim, and the laterality (left or right side) is not specified. This diagnosis is typically made through imaging (e.g., MRI, ultrasound) or surgical exploration with histological confirmation.

• Ensure documentation explicitly states "deep endometriosis" and involvement of the "pelvic brim."
• If laterality is documented (left or right), use the more specific codes N80.371 or N80.372.
• Do not confuse with superficial peritoneal endometriosis or other deep endometriosis sites (e.g., rectovaginal septum, bowel).