Dr. Adler was concerned about Peter's glucose levels, so he ordered one lab test to be done at 11 am and another at 3 pm. What modifier should be appended to the second test code?

Question

Quizplus · Accepted Answer

Modifier 91 is used for repeat clinical diagnostic laboratory tests performed on the same day, which applies to Peter's situation where a second glucose level test is ordered on the same day to compare results.

Dr Adler Was Concerned About Peter's Glucose Levels, So He