Underdosing of intravenous anesthetics, initial encounter

This code signifies that a patient received an insufficient amount of an anesthetic administered intravenously. This underdosing resulted in a suboptimal or inadequate anesthetic effect during a medical procedure or intervention.

Apply this code when documentation clearly indicates that the patient experienced an adverse effect due to receiving less than the intended dose of an intravenous anesthetic. This typically occurs during the initial period of treatment for the underdosing.

• Ensure the documentation specifies "underdosing" and the anesthetic was given "intravenously."
• Confirm this is the "initial encounter" for the underdosing event and its sequelae.
• Always code the specific manifestation or adverse effect of the underdosing first, followed by this T code.