F18.9
Inhalant use, unspecified
F18.9 is a non-billable ICD-10-CM code header for inhalant use, unspecified. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are F18.90 Inhalant use, unspecified, uncomplicated; F18.91 Inhalant use, unspecified, in remission; F18.92 Inhalant use, unspecified with intoxication; F18.94 Inhalant use, unspecified with inhalant-induced mood disorder and 4 more. Its coding notes include 2 Excludes1 entries and 1 Excludes2 entry.
Guidelines tips
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
When use, abuse and dependence of the same substance are all documented, one code is assigned, by a set hierarchy.
A medical condition due to substance use is coded from the Alphabetic Index along with the substance use, abuse or dependence code, not as a substance-induced disorder.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (1 note)
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Includes
Further defines or gives examples of the content of the category.
- volatile solvents
Also from chapter/block level (1 note)
- disorders of psychological development
More specific codes under F18.9 8
- F18.90Inhalant use, unspecified, uncomplicatedBillable
- F18.91Inhalant use, unspecified, in remissionBillable
- F18.92Inhalant use, unspecified with intoxicationHeader
- F18.94Inhalant use, unspecified with inhalant-induced mood disorderBillable
- F18.95Inhalant use, unspecified with inhalant-induced psychotic disorderHeader
- F18.97Inhalant use, unspecified with inhalant-induced persisting dementiaBillable
- F18.98Inhalant use, unspecified with other inhalant-induced disordersHeader
- F18.99Inhalant use, unspecified with unspecified inhalant-induced disorderBillable