NF stands for Nissen Funduplication surgery for acid reflux. I have never heard of achalasia type 111 but if I were you, I would be asking a whole lot of questions about the procedure that you are considering having done. All procedures have risks and in my case and may others like me that had the NF done, are suffering more than ever did before. I look briefly into the procedure that you are thinking of and it looks like it is new and doesn't last. It would have to be redone and there are several complications. If you have Face Book, look for groups that are specific to achalasia. I'm sure that there is one. That is where I have found a lot of support and answers to many question to my condition. Best of luck to you!