ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesF11.921

F11.921

Billable

Opioid use, unspecified with intoxication delirium

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 F11.921 is a billable code used to indicate a diagnosis of opioid use, unspecified with intoxication delirium.

Key Diagnostic Point:

F11.921 refers to a condition characterized by the use of opioids, which are substances that act on the opioid receptors in the brain to produce morphine-like effects. This code specifically indicates that the opioid use is unspecified and is accompanied by intoxication delirium, a state of confusion and altered consciousness resulting from the acute effects of opioids. Patients may present with symptoms such as disorientation, hallucinations, agitation, and impaired cognitive function. Opioid use disorder is a significant public health issue, often leading to addiction, withdrawal symptoms, and overdose. Treatment typically involves a combination of medication-assisted treatment (MAT), counseling, and behavioral therapies. The complexity of this diagnosis lies in the need for thorough documentation of the patient's history, the specifics of opioid use, and the clinical presentation of intoxication delirium. Accurate coding is essential for appropriate treatment planning and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in opioid types and their effects
  • Need for detailed patient history and substance use documentation
  • Differentiation between intoxication and withdrawal symptoms
  • Potential for co-occurring mental health disorders

Audit Risk Factors

  • Inadequate documentation of opioid use history
  • Failure to document the presence of delirium symptoms
  • Misclassification of intoxication versus withdrawal
  • Lack of comprehensive treatment plans

Specialty Focus

Medical Specialties

Addiction Medicine

Documentation Requirements

Detailed history of substance use, treatment history, and mental status examination.

Common Clinical Scenarios

Patients presenting with overdose symptoms, requiring emergency intervention.

Billing Considerations

Consideration of co-occurring disorders and the need for a multidisciplinary approach to treatment.

Psychiatry

Documentation Requirements

Thorough psychiatric evaluation, including mental status examination and risk assessment.

Common Clinical Scenarios

Patients with opioid use disorder presenting with acute psychiatric symptoms.

Billing Considerations

Need for careful monitoring of mental status and potential for dual diagnosis.

Coding Guidelines

Inclusion Criteria

Use F11.921 When
  • According to ICD
  • 10 guidelines, F11
  • 921 should be used when there is clear documentation of opioid use and the presence of intoxication delirium
  • It is important to differentiate this from other substance use disorders and to ensure that the documentation supports the diagnosis

Exclusion Criteria

Do NOT use F11.921 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

H0020CPT Code

Behavioral health counseling

Clinical Scenario

Used in conjunction with F11.921 for treatment planning.

Documentation Requirements

Document the nature of counseling and its relation to opioid use.

Specialty Considerations

Addiction specialists should ensure comprehensive treatment plans are documented.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of opioid-related disorders, improving the ability to track and manage opioid use disorders and their complications, such as intoxication delirium.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of opioid-related disorders, improving the ability to track and manage opioid use disorders and their complications, such as intoxication delirium.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of opioid-related disorders, improving the ability to track and manage opioid use disorders and their complications, such as intoxication delirium.

Resources

Clinical References

  • •
    Substance Abuse and Mental Health Services Administration (SAMHSA)

Coding & Billing References

  • •
    Substance Abuse and Mental Health Services Administration (SAMHSA)

Frequently Asked Questions

What is the difference between F11.921 and F11.90?

F11.921 specifies opioid use with intoxication delirium, while F11.90 indicates opioid use without specifying any complications or symptoms.