F18.259

HCC Category Mapping

What This Code Means

This code describes a person who is dependent on inhalant substances (like glue, paint thinner, or aerosols) and has developed a psychotic disorder as a result, but the specific type of psychotic symptoms is not specified. The psychotic symptoms may include hallucinations, delusions, or disorganized thinking caused by the inhalant use.

Coding Tips

• •Verify documentation clearly states both inhalant dependence AND inhalant-induced psychotic disorder to justify this combination code; do not use if only one condition is present
• •If the specific type of psychotic disorder is documented (such as with delusions or with hallucinations), use the more specific subcategories F18.251 or F18.252 instead of the unspecified code F18.259

Clinical Significance

Inhalant dependence with unspecified psychotic disorder captures substance-induced psychosis when the documentation does not clarify whether delusions or hallucinations predominate. Despite being unspecified, this still maps to HCC 54, the highest substance use category, making documentation of any psychotic features important.

Documentation Requirements

• ✓Documentation of inhalant dependence with psychotic symptoms
• ✓Evidence of psychosis linked to inhalant use
• ✓Provider query for specific psychotic features
• ✓Mental status examination documenting psychotic symptoms
• ✓Differentiation from delirium and primary psychotic disorders

Commonly Confused Codes