ICD-10 Code F10.121 – Alcohol abuse with intoxication delirium (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F10.121 – Alcohol abuse with intoxication delirium
What it is
This code identifies alcohol abuse with delirium caused by intoxication. Use it when alcohol use is linked to an acute confused state with impaired attention, awareness, or thinking.
Clinical signs
Clinical features vary; refer to documentation. Commonly documented findings include acute confusion, disorientation, agitation, altered attention, and fluctuating mental status during alcohol intoxication.
When to use this code
Use this code when the provider documents alcohol abuse and delirium due to intoxication. The record should clearly connect the delirium to current alcohol intoxication, not withdrawal or another cause.
If the note only states intoxication without delirium, or delirium from another condition, this code is not appropriate. Check documentation for the exact substance-related diagnosis.
Do not use for
Do not use this code for alcohol withdrawal delirium, alcohol dependence without abuse, or delirium from infection, head injury, or other nonalcohol causes.
Coding tip
Confirm the provider documents both alcohol abuse and intoxication delirium before assigning F10.121.