Poisoning by other antipsychotics, neuroleptics, and major tranquilizers

This code signifies an adverse reaction or overdose due to a class of medications primarily used to treat psychotic disorders, such as schizophrenia or bipolar disorder. It encompasses poisoning by typical and atypical antipsychotics, as well as other potent tranquilizers that affect the central nervous system. The patient may present with symptoms ranging from mild sedation to severe neurological or cardiovascular compromise.

Apply this code when documentation clearly indicates a patient's condition is a direct result of an overdose, accidental ingestion, or adverse effect from antipsychotic medications, neuroleptics, or major tranquilizers. This includes therapeutic misadventures, intentional self-harm, or accidental exposure. Supporting documentation should detail the specific drug class involved and the resulting clinical manifestations.

• Always sequence this code as the primary diagnosis when the poisoning is the reason for the encounter.
• Utilize an E-code (E850.1-E850.9) to specify the external cause of poisoning (e.g., accidental, intentional self-harm, therapeutic misadventure).
• Do not use this code for adverse effects from non-psychotic tranquilizers (e.g., benzodiazepines); refer to codes within the 969.4 category for those substances.