F18.121
✓ Billable
Inhalant abuse with intoxication delirium
ICD-10-CM · FY2026 · Mental, Behavioral and Neurodevelopmental Disorders
Code
F18.121
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Mental, Behavioral and Neurodevelopmental Disorders
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code F18.121?
ICD-10-CM code F18.121 represents Inhalant abuse with intoxication delirium. It is a billable diagnosis code in the Mental, Behavioral and Neurodevelopmental Disorders chapter, effective October 1, 2025 – September 30, 2026.
Is F18.121 billable?
Yes. F18.121 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is F18.121 in?
F18.121 belongs to the Mental, Behavioral and Neurodevelopmental Disorders chapter (F01–F99) of ICD-10-CM.
Related codes in the F18 category
F18
Inhalant related disorders
Non-billable
F18.1
Inhalant abuse
Non-billable
F18.2
Inhalant dependence
Non-billable
F18.9
Inhalant use, unspecified
Non-billable
F18.10
Inhalant abuse, uncomplicated
Billable
F18.11
Inhalant abuse, in remission
Billable
F18.12
Inhalant abuse with intoxication
Non-billable
F18.14
Inhalant abuse with inhalant-induced mood disorder
Billable
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