Poisoning by oth parasympathomimetics, self-harm, sequela

This code signifies a long-term consequence or residual effect resulting from a deliberate self-poisoning event involving parasympathomimetic agents (cholinergics). These substances stimulate the parasympathetic nervous system, and an overdose can lead to severe cholinergic crisis symptoms. The "sequela" aspect indicates that the acute poisoning has resolved, but the patient continues to experience related health issues.

Apply this code when documenting a patient presenting with chronic or persistent health problems directly attributable to a past intentional self-harm poisoning by a cholinergic drug. This includes conditions like ongoing neurological deficits, organ damage, or psychiatric sequelae that developed after the initial acute poisoning episode. It should be used after the acute phase of the poisoning has passed and the patient is being treated for the lasting effects.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated.
• Ensure documentation clearly links the current condition to a past intentional self-harm poisoning by a cholinergic agent.
• Verify that the poisoning event was indeed intentional self-harm, as other intent categories exist for this substance class.