The Following Coding Habit Would Be Most Likely to Trigger

The following coding habit would be most likely to trigger a payer audit:

A) Consistently billing the same, high level E/M service code
B) Consistently billing the same, low level E/M service code and consistently billing the same, high level E/M service code
C) Consistently billing the same, low level E/M service code
D) Billing an even distribution of low and high level E/M service codes