Poisoning by fentanyl or fentanyl analogs, assault, init

This code signifies an adverse health effect resulting from the intentional administration of fentanyl or its analogs by another person with the intent to harm. The patient is experiencing the initial phase of this poisoning event, requiring immediate medical attention.

Apply this code when documentation clearly indicates a patient presenting with symptoms of fentanyl poisoning due to an assault, such as a forced overdose or intentional contamination. This is appropriate for the initial hospital visit or encounter for this specific incident.

• Always verify the intent of the poisoning (assault) and the specific substance (fentanyl or analog).
• Ensure the "A" seventh character for initial encounter is appropriate for the patient's current stage of treatment.
• Code any associated signs, symptoms, or complications of the poisoning in addition to this code.