How to Dispute Outrageous Anesthesiologist Charges

Anesthesia billing is a frequent source of "sticker shock" for patients. Unlike a standard office visit, anesthesia is billed using a unique formula that includes base units, time units, and modifiers. If you are hit with a $3,000 bill for "30 minutes of anesthesia," you are likely the victim of a misapplied Anesthesia Conversion Factor.

### The Anesthesia Billing Formula The total amount allowed for anesthesia is calculated as: (Base Units + Time Units + Modifying Units) x Conversion Factor = Approved Amount

Base Units:* Fixed values assigned by the American Society of Anesthesiologists (ASA) based on the difficulty of the procedure. Time Units:* Usually calculated in 15-minute increments. Modifying Units:* Additional units for "Physical Status". Medicare does not pay for these, but many private insurers do. Conversion Factor (CF):* A dollar value per unit that varies by region. In 2025, the Medicare CF in Miami, FL is $22.39, whereas the commercial rate may be as high as $110.00.

### Identifying Professional vs. Direction Charges In many surgeries, a "Medical Director" (the Anesthesiologist) supervises a "CRNA" (Certified Registered Nurse Anesthetist). If the Anesthesiologist is supervising multiple cases, they are only allowed to bill for 50% of the allowed amount using the QK Modifier (Medical Direction of 2-4 concurrent cases). If your bill shows a "full rate" but the records show the anesthesiologist was supervising four different rooms, they are overcharging you by 100%.