The cost of anesthesia is based on several factors: the difficulty of the procedure, the time it took, and “modifying factors” like the patient’s health. The formula for calculating anesthesia charges also includes a dollar value that depends on where you have the service. - See more at: http://fairhealthconsumer.org/reimbursementseries.php?id=20#sthash.eMhO5KNk.dpuf
The formula that is generally used to calculate an anesthesia charge is:
(Base units + Time units + Modifying units) x Conversion factor = Anesthesia charge