Poisoning by oth parasympathomimetics, undetermined, subs

This code indicates a poisoning event involving medications or substances that mimic or enhance the action of acetylcholine, such as certain pesticides or glaucoma medications, where the intent of the poisoning (e.g., accidental, intentional self-harm) cannot be determined. This specific code is used for follow-up care after the initial treatment of the poisoning.

Apply this code when a patient presents for ongoing management, monitoring, or treatment of complications arising from a previous, undetermined poisoning by a parasympathomimetic agent. This includes situations like follow-up appointments for organophosphate poisoning or ongoing care for cholinergic crisis symptoms after the acute phase.

• Ensure the encounter is for follow-up care, not the initial acute treatment.
• Confirm that the substance involved is a parasympathomimetic (cholinergic) and the intent of the poisoning remains undetermined.
• Always sequence this code as a secondary diagnosis if a related complication or sequela is being treated.