The code that would be used to report the anesthesia service rendered for John Smith would be Modifier P5
<h3>What is Anesthesia?</h3>
This refers to the controlled state where a person is injected or inhales a substance that makes him lose sensation for a period of time.
Hence, we can see that based on the fact that John Smith has a history of MI and is classified with a physical status modifier of P3 which means that he has a severe systemic disease, the anesthesia service that would be tagged is Modifier P5
