difficult surgery

Is there a modifier used for difficult surgery?

difficult surgery

There are two articles in Codapedia about modifier 22

the first is by Alyce Kalb, and is excellent!

http://www.codapedia.com/-article_270_.cfm

And a shorter one:

http://www.codapedia.com/-article_194_.cfm

Isn't that

-22? I would assume that a difficult surgery means it took a long time so prolonged service modifier would apply. You will likely need to send the op note to justify the service.