Hallucinogen dependence with intoxication with delirium

This code signifies a severe pattern of hallucinogen use characterized by compulsive drug-seeking and continued use despite harmful consequences, specifically when the individual is experiencing acute intoxication that has progressed to delirium. Delirium in this context involves a disturbance in attention and awareness, developing over a short period and fluctuating in severity, directly attributable to the hallucinogen's effects.

Apply this code when documentation clearly indicates a patient meets criteria for hallucinogen dependence and is currently experiencing acute hallucinogen intoxication complicated by delirium. The medical record should detail the specific hallucinogen involved (if known), the signs and symptoms of both intoxication and delirium, and a clear link between the hallucinogen use and the delirium.

• Ensure documentation explicitly states "dependence" and not just "abuse" or "use" to support this code.
• Verify that the delirium is directly attributed to the hallucinogen intoxication, not another medical condition or substance.
• Consider sequencing this code as a primary diagnosis if it is the main reason for the encounter, followed by codes for specific hallucinogens if applicable.