Wiki Proper way to bill for a TB test

Its impossible to tell based on the information provided. What was the extent of the minor E&M? Presenting solely for the lab test, the act of injecting and checking the result are included in the TB test code.
 
The patient had did have an office visit but will be returning to have the TB test read. Do I add the 86580 to the OV or bill the 99211 and the 86580 when they return for the reading? I guess my overall question is exactly how should a TB test be billed.
 
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