At the small clinic I work for, the nurses (2) and provider (1) wear one mask all day during clinic. I've heard that this would mean that we can only charge 99072 for one patient that was seen that day, since the AMA states '3 masks' for this CPT. We do screen all patients over the phone before their appointment and when they walk through the door, and we are also using extra cleaning supplies in between each patient. Also, the nurse sometimes sees a patient and gives them antibiotics per the provider's order, which would only be one mask on that day for the nurse, so I assume we cannot charge 99072 on that day. Any comments on this would be very helpful.