Poisoning by local anesthetics, undetermined, init encntr

This code signifies a patient presenting with adverse effects resulting from exposure to a local anesthetic, where the intent of the exposure (e.g., accidental, intentional self-harm, assault) cannot be determined at the time of the initial encounter. The patient is experiencing symptoms of poisoning, which could range from mild systemic reactions to severe cardiovascular or neurological compromise. This code is used when the specific local anesthetic involved is not further specified.

Apply this code for initial encounters where a patient is admitted or seen for acute poisoning symptoms due to a local anesthetic, and the circumstances surrounding the exposure are unclear or undocumented. This is appropriate when the provider cannot definitively state whether the poisoning was accidental, intentional, or due to therapeutic misadventure. It is used for the very first encounter for this specific poisoning event.

• Always assign an additional code for the specific local anesthetic if known (e.g., T41.3X1-T41.3X6).
• Do not use this code if the intent of the poisoning is known (e.g., accidental, intentional self-harm, assault); instead, use the appropriate intent-specific code.
• The "A" seventh character indicates an initial encounter for active treatment of the poisoning.