Poisn by phenothiaz antipsychot/neurolept, undet, sequela

This code signifies the long-term or residual effects resulting from a poisoning event involving phenothiazine antipsychotics or neuroleptics, where the intent of the poisoning (e.g., accidental, intentional self-harm, assault) cannot be determined. These sequelae represent conditions that persist after the acute phase of the poisoning has resolved.

Apply this code when documenting chronic or lasting health problems directly attributable to a past phenothiazine or neuroleptic poisoning, and the circumstances surrounding the original poisoning are unknown or unspecifiable. This is appropriate for follow-up encounters addressing conditions like persistent extrapyramidal symptoms, tardive dyskinesia, or other organ damage that developed as a consequence of the poisoning.

• Always sequence this sequela code after the code(s) for the specific residual condition(s) being treated.
• Ensure documentation clearly links the current condition to a past phenothiazine/neuroleptic poisoning with an undetermined intent.
• Avoid using this code for acute poisoning events; it is specifically for the long-term effects.