In simple words: This code indicates the presence of uterine lining tissue on pelvic nerves, causing pain or other symptoms.

Endometriosis of other pelvic nerve.This condition involves the presence of endometrial tissue (tissue that normally lines the uterus) on the pelvic nerves, other than the sacral splanchnic nerves, sacral nerve roots, obturator nerve, sciatic nerve, pudendal nerve, or femoral nerve.

Example 1: A 32-year-old female presents with chronic pelvic pain, dysmenorrhea, and deep dyspareunia. Imaging reveals endometrial implants on a pelvic nerve not otherwise specified.N80.D9 is used to code the endometriosis diagnosis., During a laparoscopic procedure for suspected endometriosis, endometrial tissue is found on a small nerve in the pelvic cavity, separate from the major pelvic nerves. The surgeon documents the finding, and the diagnosis is coded as N80.D9., A patient with a history of endometriosis undergoes a surgical procedure for removal of endometrial implants. The operative report documents removal of implants from the uterosacral ligaments and other pelvic structures, including a small nerve in the pelvic sidewall not otherwise specified. N80.D9 is used to code this specific finding in addition to other related endometriosis diagnoses.

Documentation should include detailed descriptions of the patient's symptoms, pelvic examination findings, imaging results (if applicable), and operative reports (for surgical cases). The specific nerve affected should be noted, if known.Medical necessity for diagnostic and therapeutic procedures should be clearly documented.