Endometriosis of other pelvic nerve

This code signifies the presence of endometrial tissue implants on a pelvic nerve other than the sciatic or sacral plexus. This ectopic tissue can cause inflammation, scarring, and nerve compression, leading to chronic pelvic pain, neuropathic symptoms, and functional impairment. The specific nerve involved is not further specified in this code.

Apply this code when documentation explicitly states endometriosis affecting a pelvic nerve, and the nerve is not identified as sciatic or sacral. Supporting documentation should include physician notes detailing the location of endometrial implants on a specific pelvic nerve (e.g., obturator nerve, pudendal nerve, femoral nerve) and associated symptoms.

• Ensure the documentation specifies a pelvic nerve and not a nerve in another anatomical region.
• Distinguish from N80.D1 (endometriosis of sciatic nerve) and N80.D2 (endometriosis of sacral plexus).
• Always sequence this code after the primary diagnosis for endometriosis (e.g., N80.0-N80.9) if the nerve involvement is a manifestation.