Poisn by phenothiaz antipsychot/neurolept, self-harm, init

This code signifies a patient presenting with adverse effects from phenothiazine antipsychotics or other neuroleptics, specifically when the ingestion or exposure was a deliberate act of self-harm. The "initial encounter" indicates that this is the first time the patient is receiving active treatment for this particular poisoning event.

Apply this code when documenting a patient admitted to the emergency department or inpatient setting due to an overdose of medications like chlorpromazine, fluphenazine, or thioridazine, where the intent was to harm oneself. This code is appropriate for the initial assessment and management of such a poisoning.

• Always sequence this code first when it represents the primary reason for the encounter.
• Requires an additional code for the specific phenothiazine or neuroleptic involved (e.g., from the T43.3X- subcategory if more specific detail is available).
• Do not use for accidental poisonings or adverse effects from therapeutic use; those require different intent and encounter codes.