F18.280
BillableInhalant dependence with inhalant-induced anxiety disorder
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
This code describes a person who is dependent on inhalant substances (like glue, paint thinner, or aerosols) and has developed an anxiety disorder as a direct result of their inhalant use. The anxiety symptoms are caused by and occur alongside the substance dependence.
Coding Tips
- •Verify documentation clearly states both inhalant dependence AND inhalant-induced anxiety disorder to justify this combination code; do not code if anxiety existed before inhalant use began
- •This code includes the dependence component, so do not separately code F18.20 (inhalant dependence without disorder); the .280 specificity already captures the dependence status
Clinical Significance
Inhalant dependence with induced anxiety disorder captures anxiety symptoms directly caused by chronic inhalant exposure in a dependent patient. Inhalants disrupt GABAergic and glutamatergic neurotransmission, which can produce persistent anxiety that complicates both the dependence treatment and psychiatric management.
Documentation Requirements
- ✓Documentation of inhalant dependence
- ✓Specific anxiety symptoms documented
- ✓Provider statement that anxiety is induced by inhalant use
- ✓Temporal relationship between inhalant exposure and anxiety onset
- ✓Differentiation from primary anxiety disorders and withdrawal anxiety
- ✓Treatment plan addressing both conditions
Commonly Confused Codes
F18.180 — Inhalant abuse with induced anxiety; use for abuse not dependenceF18.24 — Inhalant dependence with induced mood disorder; mood and anxiety are differentF41.1 — Generalized anxiety disorder; use for primary anxietyF18.20 — Inhalant dependence, uncomplicated; use when no induced disorders present
Code Hierarchy
└F18Inhalant related disorders└F18.2Inhalant dependence└F18.28Inhalant dependence with other inhalant-induced disorders└F18.280Inhalant dependence with inhalant-induced anxiety disorder
└F18.280Inhalant dependence with inhalant-induced anxiety disorder