F18.121
BillableInhalant abuse with intoxication delirium
HCC Category Mapping
V28HCC 137 — Drug Use Disorder/Substance Use Disorder, Moderate/Severe
0.358V24HCC 55 — Drug/Alcohol Dependence
0.334ESRDHCC 55 — Drug/Alcohol Dependence
0.000What This Code Means
A person is abusing inhalants and is experiencing delirium (confusion, disorientation, hallucinations) due to the intoxication.
Coding Tips
- •Document the presence of delirium symptoms such as confusion, disorientation, or altered mental status alongside intoxication
- •This is a more severe presentation than uncomplicated intoxication and may require emergency intervention
Clinical Significance
Inhalant abuse with intoxication delirium represents a medical emergency. Inhalant-induced delirium can involve severe confusion, agitation, hallucinations, and altered consciousness, with risk of cardiac arrhythmia, seizures, and death. Immediate medical stabilization is required.
Documentation Requirements
- ✓Documentation of inhalant abuse
- ✓Clinical evidence of delirium: acute confusion, disorientation, altered consciousness
- ✓Temporal relationship to inhalant use
- ✓Cardiac monitoring results (ECG for arrhythmia)
- ✓Neurological assessment and Glasgow Coma Scale
- ✓Type of inhalant if identifiable
- ✓Emergency interventions documented
Commonly Confused Codes
F18.120 — Inhalant abuse with intoxication, uncomplicated; use when NO deliriumF18.221 — Inhalant dependence with intoxication delirium; use when dependence is documentedF18.150 — Inhalant abuse with psychotic disorder with delusions; psychosis vs delirium differs in consciousness levelF05 — Delirium due to physiological condition; use for non-substance delirium
Code Hierarchy
└F18Inhalant related disorders└F18.1Inhalant abuse└F18.12Inhalant abuse with intoxication└F18.121Inhalant abuse with intoxication delirium
└F18.121Inhalant abuse with intoxication delirium