ICD-10 Code F18.94 – Inhalant use, unspecified with inhalant-induced mood disorder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F18.94 – Inhalant use, unspecified with inhalant-induced mood disorder
What it is
Use F18.94 when documentation shows inhalant use, but the exact substance is not specified, along with a mood disorder caused by that inhalant use. It captures the combined substance use and substance-induced psychiatric condition.
Clinical signs
Clinical features vary; refer to documentation. Typical notes may describe depressed, elevated, or irritable mood temporally linked to inhalant use, with symptoms not better explained by a primary mood disorder.
When to use this code
Use this code when the record clearly states inhalant use is present and the clinician diagnoses an inhalant-induced mood disorder, but does not name the inhalant. It is appropriate for encounters focused on assessment, monitoring, or treatment planning for the substance-related mood condition.
If the documentation identifies a different substance or a primary mood disorder unrelated to inhalants, choose a different code. Check documentation when the causal link between inhalant use and mood symptoms is unclear.
Do not use for
Do not use F18.94 for inhalant intoxication, withdrawal, or uncomplicated inhalant use without a mood disorder. Do not use it when the mood disorder is documented as primary rather than substance induced.
Coding tip
Code both the unspecified inhalant use and the induced mood disorder only when the provider explicitly links them in the record.