Endometriosis of rectovaginal septum without invl of vagina

This code signifies the presence of endometrial tissue abnormally located within the rectovaginal septum, the fibrous tissue separating the rectum and vagina. Crucially, this diagnosis specifies that the endometrial implants do not extend into or affect the vaginal wall itself.

Use this code when documentation clearly indicates endometriosis confined to the rectovaginal septum without any mention of vaginal involvement. This is typically diagnosed via imaging (e.g., MRI) or surgical exploration (e.g., laparoscopy) with biopsy confirmation. The patient may present with symptoms such as deep dyspareunia, dyschezia, or pelvic pain.

• Differentiate from endometriosis involving the vagina (N80.42) or other pelvic sites.
• Ensure documentation explicitly states "without involvement of vagina" or similar phrasing.
• Code any associated symptoms (e.g., chronic pelvic pain, dyspareunia) as secondary diagnoses.