ICD-9 code Urine Drug Test

One of our patients tested positive on his employee urine drug test. He claims he'd eaten a poppy seed bagel the day before and wanted a repeat test. He came in and was seen by the doctor. My question is, what would be the ICD9 code? We just gave him the requisition for the test. It wasn't actually done in the office. The doctor coded V70.3. I don't believe that is right. Can someone please help me??? Thanks in advance.

re: ICD-9 code Urine Drug Test

Could assign code 791.9.