Ligation of ilioinguinal nerve? Help!

Does anyone know if there is a CPT® for ligating a peripheral (inguinal) nerve? This is a new one for me that the physcian is asking me about & I'm not finding anything.
He performed an orchiectomy along with removal of 8 hemoclips & mesh from inguinal area due to several prior surgeries. States he ligated ilioinguinal nerve in hopes of relieving the patient of his discomfort & chronic pain. Any ideas on this?

So far he has
20525 for removal of clips/mesh
54520 for orchiectomy
????? for ligation of ilioinguinal nerve

Thanks for your time, I appreciate any help!