ICD-10 Guide

Fentanyl Abuse

ICD-10 Coding for Fentanyl Abuse(F11.20, T40.42X-)

PRIMARY SPECIALTYEmergency Medicine

COMPLEXITYHigh

LAST UPDATED09/15/2025

Sam Tuffun, PT, DPT

Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Fentanyl Abuse?

Essential facts and insights about Fentanyl Abuse

Key Clinical Considerations:

Respiratory depression, altered mental status, pinpoint pupils
Urine drug screening, serum fentanyl levels, clinical history
Decreased respiratory rate, hypotension, sedation

Clinical Information

Clinical Criteria & Documentation Requirements

Patient history of substance use, clinical assessment findings, treatment plan
ICD-10-CM codes for substance use disorders, specific terminology for fentanyl abuse
Example: 'Patient presents with signs of opioid overdose, confirmed by urine drug screen showing fentanyl.'

Coding Guidelines

Usage Guidelines & Examples

Follow guidelines for opioid use disorder coding, avoid using unspecified codes
Common errors include misclassifying severity of use disorder

Code Exclusions

Important Exclusions

Other substance use disorders, non-opioid related conditions
Fentanyl-related overdose codes (T40.4)

Specialty Focus

Primary Specialty

Emergency Medicine

Specialty Applications

Adults with a history of opioid use, patients presenting in emergency settings
Emergency departments, urgent care facilities

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

Comprehensive clinical documentation
Accurate code selection based on clinical criteria
Proper exclusion considerations
Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

Ensure proper documentation for billing
Verify code specificity requirements
Check for any additional codes needed
Review payer-specific guidelines

Common Issues

Insufficient clinical documentation
Incorrect code selection
Missing supporting diagnoses
Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Document the patient's history, clinical signs, and treatment provided.

Billing considerations?

Ensure accurate coding for the level of care and services rendered.

Fentanyl Abuse

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

Documentation requirements?

Billing considerations?

Fentanyl Abuse

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

Documentation requirements?

Billing considerations?