Underdosing of unspecified anesthetics, sequela

This code indicates that a patient is experiencing a current health problem or complication that is a direct result of having received an insufficient or inadequate dose of an unspecified anesthetic in the past. The original underdosing event is no longer acute, but its lingering effects are being treated.

Apply this code when documenting conditions like chronic pain, nerve damage, or other persistent adverse effects that are directly attributable to a past instance of anesthetic underdosing, where the specific anesthetic agent is unknown. This code is appropriate when the patient is presenting for treatment of these long-term consequences.

• Requires a seventh character of 'S' for sequela, indicating a complication or condition arising from a previous injury or disease.
• Always sequence this code after the code(s) for the specific sequela being treated (e.g., chronic pain, nerve dysfunction).
• Do not use for acute underdosing events; this code is exclusively for the long-term effects.