Poisoning by oth psychodysleptics, self-harm, init

This code signifies a patient presenting with an adverse physiological or psychological effect resulting from the deliberate self-administration of a hallucinogenic substance. The intent is to cause harm to oneself, rather than for recreational use or accidental exposure. The "initial encounter" indicates the patient is receiving active treatment for the acute effects of the poisoning.

Apply this code when documenting an emergency department visit or initial hospitalization for a patient who has intentionally ingested or otherwise self-administered a hallucinogen (e.g., LSD, psilocybin, MDMA, PCP) with the explicit purpose of self-harm. This includes cases where the patient is experiencing acute intoxication, overdose symptoms, or adverse psychological reactions directly attributable to the substance.

• Always sequence this code first when it represents the primary reason for the encounter.
• Requires an additional code from categories F16.- for the specific hallucinogen use disorder, if applicable.
• Do not use for accidental poisoning or recreational use without intent of self-harm; refer to codes in the T40.991- or T40.993- series.