F18.9
Header — not billableInhalant use, unspecified
The ICD-10 code for inhalant use, unspecified is F18.9.
F18.9 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 8 more specific codes below.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under F18.9
- F18.90Inhalant use, unspecified, uncomplicated
- F18.91Inhalant use, unspecified, in remission
- F18.92Inhalant use, unspecified with intoxicationnon-billable header
- F18.94Inhalant use, unspecified with inhalant-induced mood disorder
- F18.95Inhalant use, unspecified with inhalant-induced psychotic disordernon-billable header
- F18.97Inhalant use, unspecified with inhalant-induced persisting dementia
- F18.98Inhalant use, unspecified with other inhalant-induced disordersnon-billable header
- F18.99Inhalant use, unspecified with unspecified inhalant-induced disorder
Related codes in this category
- F18.1Inhalant abusenon-billable header
- F18.2Inhalant dependencenon-billable header
- F18.9Inhalant use, unspecifiednon-billable header