I need an icd-9 code for "insulin resistance". The doctor did not mention dysmetabolic syndrome x so I dont think that 277.7 would be appropriate. Patient has a history of gestational diabetes in past. No lab work on file yet so I cannot code abnormal lab work findings. I am assuming he is basing his dx on the HPI symptoms of brain fog and mood swings. Help. I think I saw an article on this recently, but I cant find it.