Poisoning by barbiturates, intentional self-harm, init

This code signifies a patient presenting with adverse effects resulting from the deliberate ingestion or administration of barbiturates with the intent to cause self-harm. The patient is in the initial phase of treatment for this poisoning event.

Apply this code when documenting an emergency department visit or initial hospitalization for a patient who has intentionally overdosed on barbiturates. It is appropriate for the first encounter where the poisoning is diagnosed and treatment is initiated.

• Always assign an additional code for any associated mental health conditions, such as depression or suicidal ideation.
• Ensure documentation clearly states the intent of self-harm; if accidental, a different code from the T42.3X1 category would be appropriate.
• This "A" seventh character indicates an active treatment phase; subsequent encounters for the same poisoning would use "D" (subsequent) or "S" (sequela).