ICD-10 Code F18.27 – Inhalant dependence with inhalant-induced dementia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F18.27 – Inhalant dependence with inhalant-induced dementia
What it is
F18.27 identifies inhalant dependence with dementia caused by inhalant use. Use it when documentation shows both a dependence disorder and persistent cognitive decline linked to inhalants.
Clinical signs
Common findings include impaired memory, reduced judgment, and other cognitive deficits consistent with dementia. Clinical features vary; refer to documentation for the specific mental status changes and the inhalant-related cause.
When to use this code
Use this code when the provider documents inhalant dependence and explicitly states inhalant-induced dementia. It fits records describing ongoing inhalant use with cognitive decline attributed to that exposure. If the chart does not clearly link dementia to inhalants, check documentation before coding.
Do not use for
Do not use it for inhalant abuse or uncomplicated dependence without dementia. Also avoid it when dementia is present but the inhalant cause is not documented or cannot be confirmed.
Coding tip
Code both the dependence and the induced dementia only when the record clearly supports both diagnoses.