Poisoning by fentanyl or fentanyl analogs, undet, init

This code signifies a case of poisoning due to fentanyl or its analogs where the intent (accidental, intentional self-harm, assault) cannot be determined at the time of encounter. The patient is experiencing the acute toxic effects of the substance.

Apply this code when a patient presents with symptoms of fentanyl poisoning, and the medical record does not clearly specify whether the exposure was accidental, intentional, or due to an assault. This code is appropriate for the initial encounter for treatment of the acute poisoning.

• Always assign a T code for poisoning first, followed by codes for any associated manifestations.
• Only use this "undetermined" intent code when documentation explicitly lacks information regarding the intent of the poisoning.
• The "A" seventh character indicates an initial encounter for active treatment of the poisoning.