Endometriosis of the femoral nerve

This code describes the presence of endometrial tissue abnormally located on or infiltrating the femoral nerve. This ectopic tissue can cause pain, sensory disturbances, and motor weakness in the distribution of the femoral nerve, often mimicking other neuropathic conditions.

Use this code when documentation explicitly states endometriosis affecting the femoral nerve. This diagnosis is typically confirmed through imaging (e.g., MRI) or surgical exploration with biopsy. It often presents in patients with a history of pelvic endometriosis experiencing unilateral or bilateral lower extremity symptoms.

• Ensure the documentation clearly specifies the femoral nerve as the site of endometriosis, not just general pelvic nerve involvement.
• Do not confuse with general neuropathic pain or other causes of femoral neuropathy without documented endometriosis.
• Sequence this code after the primary diagnosis if the endometriosis of the femoral nerve is a manifestation or complication of a more generalized endometriosis.