Finding of hallucinogen in blood

This code indicates the presence of a hallucinogenic substance detected in a patient's blood sample. It signifies a positive laboratory finding for drugs such as LSD, psilocybin, PCP, or MDMA, without necessarily implying intoxication or a substance use disorder.

Use this code when laboratory results confirm the presence of a hallucinogen in the blood, typically identified during toxicology screening. This code is appropriate for documenting a positive finding, often in emergency department settings for altered mental status, or during routine drug screenings.

• Always confirm the specific hallucinogen identified if possible, though this code is for the general finding.
• Do not use this code if the patient is experiencing acute intoxication; instead, refer to codes in the T40-T43 range for poisoning by drugs.
• This code can be sequenced as a secondary diagnosis when the primary reason for the encounter is related to the effects or consequences of the hallucinogen.