Ask Dr. Z

I have not encountered this before.  The patient came in for a left heart catheterization done by one cardiologist, and because of continuing parascapular pain, a second cardiologist repeated the left heart catheterization the same day, the same outpatient encounter.  I bill for the hospital and understand that most procedures in the hospital have a one day global period.  I am unsure if this would apply to the left heart catheterization (93458) and if this would be billed only once, which is how I believe it should be, or if it would be appropriate to bill twice with a -59 modifier because of the continued symptoms.