Poisoning by phenothiaz antipsychot/neurolept, assault, subs

This code signifies a patient presenting for follow-up care or treatment of adverse effects resulting from an intentional overdose or misuse of phenothiazine antipsychotics or other neuroleptic medications, inflicted by another person. The patient is experiencing ongoing complications or requires continued management related to this poisoning event.

Apply this code when documenting subsequent encounters for patients who were previously treated for phenothiazine or neuroleptic poisoning due to an assault. This includes follow-up appointments for monitoring organ damage, managing persistent neurological symptoms, or addressing psychological sequelae. It is appropriate for any visit after the initial acute treatment.

• Ensure the documentation clearly states the poisoning was due to an assault and that this is not the initial encounter for the poisoning.
• Always code with an additional code for the specific adverse effect or manifestation of the poisoning (e.g., delirium, dyskinesia, cardiac arrhythmia).
• Distinguish carefully between accidental, intentional self-harm, and assault poisonings, as the seventh character changes accordingly.