ICD-10 Code F18.980 – Inhalant use, unspecified with inhalant-induced anxiety disorder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F18.980 – Inhalant use, unspecified with inhalant-induced anxiety disorder
What it is
This code identifies inhalant use, unspecified when the patient also has an anxiety disorder caused by that inhalant use. Use it when the record links the anxiety symptoms directly to inhalant exposure.
Clinical signs
Clinical features vary; refer to documentation. You may see anxiety, fear, restlessness, or panic-like symptoms occurring in the setting of inhalant use, with the clinician attributing the anxiety to the substance.
When to use this code
Use this code when the provider documents inhalant use and specifically diagnoses inhalant-induced anxiety disorder, but does not name a more specific inhalant type. It fits encounters where the anxiety is considered substance-induced rather than a primary anxiety disorder. Check documentation if the causal link is unclear.
Do not use for
Do not use this code for primary anxiety disorders without substance involvement, or for inhalant use without documented anxiety disorder. If the anxiety is due to another substance or condition, code that documented cause instead.
Coding tip
Confirm that both inhalant use and the induced anxiety disorder are explicitly documented before assigning F18.980.