Poisoning by mixed antiepileptics, self-harm, init

This code signifies a patient presenting with adverse effects from intentionally self-administering a combination of different antiepileptic medications. The poisoning is a result of a deliberate act to cause harm to oneself, and the patient is in the initial phase of receiving active treatment for this condition.

Use this code when documenting an overdose involving multiple antiepileptic drugs where the patient explicitly states or clinical evidence strongly suggests suicidal intent. This applies to the first encounter for treatment of the acute poisoning, such as in an emergency department or during initial hospitalization. It is appropriate when the patient is actively being managed for the toxic effects.

• Always assign an additional code for the specific antiepileptic drugs involved, if known, from categories T42.0-T42.4.
• Ensure documentation clearly supports intentional self-harm; differentiate from accidental poisoning (T42.5X1) or assault (T42.5X3).
• The "A" seventh character indicates an initial encounter, meaning the patient is receiving active treatment for the poisoning. Subsequent care would use "D" or "S".