ICD-10 Code F18.98 – Inhalant use, unspecified with other inhalant-induced disorders (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F18.98 – Inhalant use, unspecified with other inhalant-induced disorders
What it is
This code identifies inhalant use when the record also documents another inhalant-induced disorder, but the exact disorder is not named. Use it for inhalant-related conditions that are not better specified elsewhere.
Clinical signs
Clinical features vary; refer to documentation. Records may note intoxication, behavioral changes, neurologic effects, or another inhalant-induced condition linked to inhalant use.
When to use this code
Use this code when the provider documents inhalant use and an additional inhalant-induced disorder, but does not specify the exact disorder. It also fits cases where the chart clearly ties the disorder to inhalant exposure. If the documentation names a more specific inhalant-induced condition, code that instead.
Do not use for
Do not use this code for inhalant use without an associated inhalant-induced disorder. Do not use it when the record identifies a different substance or a more specific inhalant-related diagnosis.
Coding tip
Check documentation for the exact inhalant-induced disorder before assigning F18.98.