Poisoning by barbiturates, undetermined, initial encounter

This code signifies a case of poisoning due to barbiturates where the intent (e.g., accidental, intentional self-harm, assault) cannot be determined from the available documentation. The patient is presenting for the initial treatment of this poisoning event.

Apply this code when a patient presents with signs and symptoms of barbiturate toxicity, and the medical record explicitly states that the intent of the poisoning is unknown or undetermined. This is also used for the very first encounter for this specific poisoning episode.

• Ensure documentation clearly states "undetermined" intent for barbiturate poisoning.
• Verify this is the patient's first presentation for this specific poisoning event; subsequent encounters will use a different 7th character.
• Do not use this code if the intent (accidental, intentional self-harm, assault) is documented, even if initially unclear.