Underdosing of unspecified anesthetics, initial encounter

This code signifies a patient experiencing adverse effects due to receiving less than the prescribed or therapeutically appropriate dose of an anesthetic agent, where the specific anesthetic is not documented. This underdosing event is the initial encounter for this particular adverse reaction.

Apply this code when a patient presents with symptoms related to insufficient anesthesia, such as inadequate pain control or awareness during a procedure, and the medical record indicates an underdosing of an anesthetic without specifying the drug. This is appropriate for the first time the patient is seen for this specific underdosing event.

• Ensure documentation clearly states "underdosing" and that the anesthetic agent is "unspecified."
• Only use this code for the initial encounter of the underdosing event; subsequent encounters would use a different seventh character.
• Always sequence this code after the code(s) for the specific manifestation(s) of the underdosing.