ICD-10 Code F13.921 – Sedative, Hypnotic or Anxiolytic Use, Unspecified with Intoxication Delirium (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F13.921 – Sedative, hypnotic or anxiolytic use, unspecified with intoxication delirium
What it is
This code identifies delirium caused by intoxication from a sedative, hypnotic, or anxiolytic when the specific substance is not documented. It reflects an acute mental status change linked to recent drug use.
Clinical signs
Typical findings include confusion, reduced attention, disorientation, and an altered level of consciousness. Clinical features vary; refer to documentation, and confirm the delirium is attributed to intoxication rather than another cause.
When to use this code
Use F13.921 when the record documents intoxication delirium from a sedative, hypnotic, or anxiolytic and does not name the exact agent. You may also use it when the substance is known only as a class and the provider links it to delirium. Check documentation for the intoxication context.
Do not use for
Do not use this code for withdrawal delirium, delirium from another substance, or delirium without intoxication. If the drug class or causal relationship is unclear, check documentation.
Coding tip
Assign the code only when the provider clearly documents both the substance class and intoxication delirium.