Deep endometriosis of the bilateral pelvic sidewall

This code signifies the presence of deeply infiltrating endometrial tissue located on both the left and right pelvic sidewalls. This form of endometriosis extends more than 5mm beneath the peritoneal surface, often involving structures like the ureters, nerves, or blood vessels within the pelvic sidewall.

Apply this code when documentation clearly indicates deep endometriosis affecting both pelvic sidewalls, typically confirmed by imaging (MRI, ultrasound) or surgical findings (laparoscopy). Use when the physician explicitly states "deep endometriosis" and specifies bilateral involvement of the pelvic sidewalls.

• Ensure documentation specifies "deep" involvement and "bilateral" pelvic sidewall location.
• Distinguish from superficial endometriosis or endometriosis affecting other pelvic sites (e.g., uterosacral ligament, rectovaginal septum).
• Code any associated complications or symptoms (e.g., chronic pelvic pain, ureteral obstruction) separately.