I have a physician that is ordering Hyperbaric Oxygen Therapy for a patient with documented radiation proctitis. He is arguing that radiation proctitis is the same thing as soft tissue radionecrosis, and he is wanting to bill with L59.8 (specified disorder of skin and subcutaneous tissues related to radiation) instead of K62.7 (radiation proctitis). I understand that L59.8 is payable for HBOT, but I'm having trouble finding anything to support whether or not this is an accurate diagnosis for what is actually happening with the patient. We are under the NGS MAC. Can anyone offer any resources or advice? Thank you.