Deep endometriosis of the pelvic peritoneum, oth sites

This code signifies the presence of deep infiltrating endometriosis affecting the pelvic peritoneum, specifically in locations other than the uterosacral ligament or rectovaginal septum. Deep endometriosis is characterized by lesions penetrating more than 5mm beneath the peritoneal surface. It often presents with severe pain and can involve multiple pelvic organs.

Use this code when documentation specifies deep endometriosis of the pelvic peritoneum in a site not otherwise classified, such as the bladder peritoneum, broad ligament, or pelvic sidewall. This diagnosis is typically confirmed through surgical visualization and histological examination of biopsy specimens. Ensure the medical record clearly distinguishes it from superficial peritoneal endometriosis.

• Differentiate from N80.31 (uterosacral ligament) and N80.32 (rectovaginal septum) based on documented anatomical site.
• Always seek specific documentation of "deep" infiltration; superficial peritoneal endometriosis codes are distinct.
• Consider sequencing this code after any codes for associated infertility (N97.x) or chronic pelvic pain (R10.2).