Poisoning by oth parasympathomimetics, self-harm, init

This code signifies a patient presenting with an overdose or toxic effects from medications or substances that mimic or enhance the action of the parasympathetic nervous system, such as certain pesticides or glaucoma medications. The poisoning is specifically identified as an act of intentional self-harm, indicating a deliberate attempt by the patient to cause injury or death to themselves. The "initial encounter" designation means this is the first time the patient is receiving active treatment for this specific poisoning.

Use this code when documentation clearly indicates a patient has ingested or been exposed to a parasympathomimetic agent, leading to symptoms of cholinergic toxicity (e.g., salivation, lacrimation, urination, defecation, gastrointestinal upset, emesis, miosis, bradycardia, bronchospasm). The medical record must explicitly state that the poisoning was intentional self-harm, such as in cases of suicide attempts. This code is appropriate for the initial hospitalization or outpatient visit where the poisoning is being actively managed.

• Ensure the documentation specifies "intentional self-harm" rather than accidental or assault.
• Verify the substance is a parasympathomimetic (cholinergic) agent; do not use for other drug classes.
• Confirm this is the initial encounter for treatment of this specific poisoning event.