---
title: "ICD-10-CM F11.921: Opioid use, unspecified with… | BillingBrief"
description: "ICD-10-CM code F11.921: Opioid use, unspecified with intoxication delirium. Category, related codes, and the official source, in plain English."
canonical: "https://billingbrief.com/icd10/f11.921/"
language: "en"
---

# F11.921 Opioid use, unspecified with intoxication delirium

ICD-10-CM · [CMS code reference](#source)

**Official ICD-10-CM description:** Opioid use, unspecified with intoxication delirium

## Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

### Also covers

-   Opioid-induced delirium

### Excludes1

Not coded together with this code. The exception is when the two conditions are unrelated to each other.

-   opioid use, unspecified with withdrawal ([F11.93](https://billingbrief.com/icd10/f11.93/))
-   opioid abuse (F11.1-)
-   opioid dependence (F11.2-)

## Related codes

-   [`F11.90` Opioid use, unspecified, uncomplicated ICD-10-CM](https://billingbrief.com/icd10/f11.90/)
-   [`F11.91` Opioid use, unspecified, in remission ICD-10-CM](https://billingbrief.com/icd10/f11.91/)
-   [`F11.920` Opioid use, unspecified with intoxication, uncomplicated ICD-10-CM](https://billingbrief.com/icd10/f11.920/)
-   [`F11.922` Opioid use, unspecified with intoxication with perceptual disturbance ICD-10-CM](https://billingbrief.com/icd10/f11.922/)
-   [`F11.929` Opioid use, unspecified with intoxication, unspecified ICD-10-CM](https://billingbrief.com/icd10/f11.929/)
-   [`F11.93` Opioid use, unspecified with withdrawal ICD-10-CM](https://billingbrief.com/icd10/f11.93/)
-   [`F11.94` Opioid use, unspecified with opioid-induced mood disorder ICD-10-CM](https://billingbrief.com/icd10/f11.94/)
-   [`F11.950` Opioid use, unspecified with opioid-induced psychotic disorder with delusions ICD-10-CM](https://billingbrief.com/icd10/f11.950/)

## Common questions

### Is F11.921 a billable code?

Yes. F11.921 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.

## From the source

Official description from [CMS](https://www.cms.gov/medicare/coding-billing/icd-10-codes).
ICD-10-CM FY2027 (effective October 1, 2026).

Code set

ICD-10-CM

Category

F11 Opioid related disorders

Chapter

Mental, behavioral and neurodevelopmental disorders

Billable

Yes

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).