Deep endometriosis of the left uterosacral ligament

This code signifies the presence of deeply infiltrating endometrial tissue, similar to the uterine lining, within the left uterosacral ligament. This condition is a form of severe endometriosis, often associated with significant pelvic pain and dysfunction.

Use this code when diagnostic imaging (e.g., MRI, transvaginal ultrasound) or surgical exploration (e.g., laparoscopy) confirms deep endometriosis specifically affecting the left uterosacral ligament. Documentation should clearly specify the location and depth of the endometrial implants.

• Ensure documentation explicitly states "deep" endometriosis and specifies the "left uterosacral ligament" to support this granular code.
• Do not confuse with superficial endometriosis or endometriosis affecting other pelvic sites; specific codes exist for those.
• Consider sequencing this code with codes for associated symptoms like chronic pelvic pain (e.g., R10.2) or infertility (e.g., N97.x) if documented.