Endometriosis of the obturator nerve

This code signifies the presence of endometrial tissue abnormally located on or within the obturator nerve. This condition can lead to neuropathic pain, motor deficits, or sensory disturbances in the distribution of the obturator nerve, often exacerbated during menstruation.

Apply this code when documentation explicitly states endometriosis affecting the obturator nerve. This diagnosis is typically made based on imaging findings (e.g., MRI) or confirmed during surgical exploration. Symptoms such as groin pain, adductor weakness, or sensory changes along the medial thigh, particularly if cyclical, support this diagnosis.

• Ensure documentation specifies the obturator nerve as the affected site, not just general pelvic nerve involvement.
• Consider sequencing this code after a more generalized endometriosis code (e.g., N80.0-N80.9) if the obturator nerve involvement is a manifestation of a broader disease process.
• Look for supporting documentation of neurological symptoms or findings directly attributable to obturator nerve dysfunction.