I have gone over and over my icd-9 2011 and I have talked to several people and I can not find the dx code for non- valvular afib. Does any one happen to have this code? I am trying to get the medication pradaxa aproved for a patient and i am being told afib 427.31 is not the correct dx it has to be non-valvular afib. Can some one please help me!