Poisoning by antimycobacterial drugs, undetermined, init

This code signifies a case where a patient has been poisoned by antimycobacterial medications, and the intent (e.g., accidental, intentional self-harm, assault) cannot be determined at the time of the initial encounter. It indicates a toxic effect from these specific drugs, requiring medical attention.

Apply this code when a patient presents with symptoms of antimycobacterial drug toxicity, and the provider documents "undetermined" intent for the poisoning. This is appropriate for the very first visit or admission for this specific poisoning event.

• Ensure documentation clearly states "undetermined" intent for the poisoning.
• Confirm the drug involved is an antimycobacterial agent.
• Reserve the "A" seventh character for the initial encounter for this specific poisoning.