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F16.121

Billable

Hallucinogen abuse with intoxication with delirium

HCC Category Mapping

V28HCC 137Drug Use Disorder/Substance Use Disorder, Moderate/Severe
0.358
V24HCC 55Drug/Alcohol Dependence
0.334
ESRDHCC 55Drug/Alcohol Dependence
0.000

What This Code Means

Misuse of hallucinogenic drugs (like LSD or psilocybin) with acute confusion and disorientation during intoxication.

Coding Tips

  • This code requires documentation of both hallucinogen abuse and delirium as a specific manifestation of intoxication
  • Delirium must be present during the acute intoxication period, not as a separate condition

Clinical Significance

Hallucinogen abuse with intoxication delirium is a medical emergency where hallucinogenic drug use produces acute delirium with disorientation, confusion, and potential for dangerous behavior. This is more common with PCP-type hallucinogens but can occur with any hallucinogenic substance at high doses. Patients may require physical restraint, sedation, and intensive monitoring for safety.

Documentation Requirements

  • Documented hallucinogen abuse
  • Clinical evidence of acute intoxication from hallucinogens
  • Delirium criteria documented: acute onset confusion, altered consciousness, disorientation, fluctuating mental status
  • Specific hallucinogen identified when possible
  • Safety interventions, level of monitoring, and any restraint use documented

Commonly Confused Codes

Code Hierarchy

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