Poisoning by other psychodysleptics, assault, sequela

This code signifies a long-term consequence or complication arising from an assault involving poisoning by a hallucinogenic substance not otherwise specified. It indicates that the patient is presenting for treatment of a condition directly resulting from a past, intentional administration of a psychodysleptic drug by another person.

Apply this code when documenting a sequela, such as chronic neurological damage, persistent psychological disorders, or organ damage, that is directly attributable to a past assault involving an unspecified hallucinogen. This code is appropriate when the acute phase of the poisoning has resolved, 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 hallucinogen poisoning that occurred as an assault.
• Verify that the specific hallucinogen is not identified; if known, a more specific T40.91- or T40.92- code might be appropriate.